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coursehero.com

coursehero.com is SSL secured

Free website and domain report on coursehero.com

Last Updated: 24th October, 2023 Update Now
Overview

Snoop Summary for coursehero.com

This is a free and comprehensive report about coursehero.com. The domain coursehero.com is currently hosted on a server located in United States with the IP address 104.17.92.47, where USD is the local currency and the local language is English. Our records indicate that coursehero.com is privately registered by Domains By Proxy, LLC. Coursehero.com is expected to earn an estimated $37,119 USD per day from advertising revenue. The sale of coursehero.com would possibly be worth $27,097,066 USD. This figure is based on the daily revenue potential of the website over a 24 month period. Coursehero.com is unbelievably popular with an estimated 3,986,658 daily unique visitors. This report was last updated 24th October, 2023.

About coursehero.com

Site Preview: coursehero.com coursehero.com
Title:
Description:
Keywords and Tags: course, course hero, course hero free, course hero free trial, course hero login, education, free course hero account, hatchet, how to unblur course hero, it characters, reference
Related Terms:
Fav Icon:
Age: Over 16 years old
Domain Created: 11th January, 2008
Domain Updated: 12th January, 2023
Domain Expires: 11th January, 2024
Review

Snoop Score

5/5 (Perfect!)

Valuation

$27,097,066 USD
Note: All valuation figures are estimates.

Popularity

Worldwide Sensation
Note: Popularity is estimated.

Rank, Reach and Authority

Alexa Rank: 699
Alexa Reach:
SEMrush Rank (US): 1,567
SEMrush Authority Score: 66
Moz Domain Authority: 83
Moz Page Authority: 64

Organic vs Paid (Google Ads)

Organic Paid
Keywords: 2,818,453 10
Traffic: 2,164,578 25
Cost: $1,992,504 USD $143 USD
Traffic

Visitors

Daily Visitors: 3,986,658
Monthly Visitors: 121,341,311
Yearly Visitors: 1,455,130,170
Note: All visitors figures are estimates.

Visitors By Country

Revenue

Revenue

Daily Revenue: $37,119 USD
Monthly Revenue: $1,129,793 USD
Yearly Revenue: $13,548,528 USD
Note: All revenue figures are estimates.

Revenue By Country

SEO

Backlinks Analysis (SEMrush)

Backlinks: 3,467,252
Referring Domains: 15,744
Referring IPs: 17,683
Coursehero.com has 3,467,252 backlinks according to SEMrush. 83% of these backlinks are "dofollow" (follow) links which allow the flow of link equity to pass through, which may improve coursehero.com's search engine rankings. Other links are treated as 'hints' by search engines and may also pass link equity, depending on what search engines decide in each case.
100% of coursehero.com's backlinks are text and image links, which are ideal for SEO. Other backlink types may be unrecognized or ignored by search engines.

Top New Follow Links

1
Source: http://www.iaitew.me/
Target: https://www.coursehero.com/thumb/db/a1/dba17a5268ea227d8c47138ffcbca7ac659d5c20_180.jpg
2
Source: http://www.iaitew.me/
Target: https://www.coursehero.com/thumb/de/0e/de0e5ba84ccd2efcf24adbdf1db9bbafa1a8dea1_180.jpg
3
Source: http://www.iaitew.me/
Target: https://www.coursehero.com/thumb/e3/af/e3af09024bbe3a9b5a904718fe1bba043653270b_180.jpg
4
Source: http://www.iaitew.me/
Target: https://www.coursehero.com/thumb/d2/fc/d2fc1a48f482f1b079b698aa0316f6c5b8375597_180.jpg
5
Source: http://www.iaitew.me/
Target: https://www.coursehero.com/thumb/a2/bd/a2bdaeac4eab47ed14344b90baf2bbce82bcab65_180.jpg

Top Ranking Keywords (US)

1
Keyword: course hero
Ranked Page: https://www.coursehero.com/
2
Keyword: course hero login
Ranked Page: https://www.coursehero.com/login/
3
Keyword: course hero free
Ranked Page: https://www.coursehero.com/free-access/
4
Keyword: course
Ranked Page: https://www.coursehero.com/
5
Keyword: how to unblur course hero
Ranked Page: https://www.coursehero.com/college-life/how-to-unblur-course-hero/

Domain Analysis

Value Length
Domain: coursehero.com 14
Domain Name: coursehero 10
Extension (TLD): com 3
Expiry Check:

Page Speed Analysis

Average Load Time: 2.22 seconds
Load Time Comparison: Faster than 29% of sites

PageSpeed Insights

Avg. (All Categories) 72
Performance 35
Accessibility 88
Best Practices 75
SEO 83
PWA 78
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://www.coursehero.com/
Updated: 13th November, 2022

1.65 seconds
First Contentful Paint (FCP)
79%
12%
9%

0.02 seconds
First Input Delay (FID)
88%
7%
5%

Simulate loading on desktop
35

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for coursehero.com. This includes details about optimizing page load times which can result in a better user experience.

Metrics

Cumulative Layout Shift — 0.047
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Other

Properly size images — Potential savings of 67 KiB
Images can slow down the page's load time. Coursehero.com should consider serving more appropriate-sized images.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://www.coursehero.com/assets/img/homepage/tweets/twitter_profile_rocky.jpg
28270
27987
https://www.coursehero.com/assets/img/homepage/tweets/twitter_profile_jenny.jpg
22690
22463
https://www.coursehero.com/assets/img/homepage/tweets/twitter_profile_tso.jpg
18553
18302
Defer offscreen images — Potential savings of 244 KiB
Time to Interactive can be slowed down by resources on the page. Coursehero.com should consider lazy-loading offscreen and hidden images.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://www.coursehero.com/assets/img/homepage/tweets/twitter_profile_rocky.jpg
28270
28270
https://www.coursehero.com/assets/img/homepage/blog/36_roommate_questions.jpg
25729
25729
https://cdn.cookielaw.org/logos/265c1602-2645-42a0-9388-484739b10fd3/5817a35c-82a4-4bed-86d6-71b98b9acaed/e3803b9f-280e-45f1-8abc-9ff922c6c05d/CMYK-course-hero-logo.png
25272
25272
https://www.coursehero.com/assets/img/homepage/tweets/twitter_profile_jenny.jpg
22690
22690
https://www.coursehero.com/assets/img/homepage/blog/why_you_procastinate.jpg
22390
22390
https://www.coursehero.com/assets/img/homepage/blog/are_you_in_the_right_major.jpg
21060
21060
https://www.coursehero.com/assets/img/homepage/blog/days_worth_of_fun.jpg
19829
19829
https://www.coursehero.com/assets/img/homepage/tweets/twitter_profile_tso.jpg
18553
18553
https://www.coursehero.com/assets/img/homepage/blog/the_best_way_to_take_notes.jpg
18038
18038
https://www.coursehero.com/assets/img/homepage/blog/how_to_study_a_textbook.jpg
16410
16410
https://www.coursehero.com/assets/img/homepage/blog/practice_tests.jpg
15471
15471
https://www.coursehero.com/assets/img/homepage/subscribe_2019.svg
7313
7313
https://www.coursehero.com/assets/img/homepage/upload_2019.svg
6193
6193
https://cdn.cookielaw.org/logos/static/poweredBy_ot_logo.svg
2323
2323
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Coursehero.com should consider minifying CSS files.
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Coursehero.com should consider minifying JS files.
Reduce unused CSS — Potential savings of 159 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Coursehero.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/app.3dac923c12a7c98c4691.css
37242
37149
https://www.coursehero.com/ch-assets/granite/v1/granite.min.css
23920
22628
https://f.vimeocdn.com/p/4.13.5/css/player.css
21157
21157
.orange-btn{background-color:#e00099 !important} ...
21323
19400
#onetrust-banner-sdk{-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%} ...
19424
19133
webpack://./../../../node_modules/@granite/react-components/dist/style.css
19873
18519
.ck-hidden{display:none!important} ...
16289
14580
https://www.coursehero.com/sym-assets/css/1e752e7-6f99a8a.css
13568
10467
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Serve images in next-gen formats — Potential savings of 173 KiB
Consider JPEG 2000, JPEG XR or WebP image formats which provide better compression than PNG and JPEG.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://www.coursehero.com/assets/img/homepage/hero_image.jpg
176941
106036.95
https://www.coursehero.com/assets/img/homepage/tweets/twitter_profile_rocky.jpg
28270
11757
https://www.coursehero.com/assets/img/homepage/blog/why_you_procastinate.jpg
22390
10780.3
https://www.coursehero.com/assets/img/homepage/blog/are_you_in_the_right_major.jpg
21060
10600.7
https://www.coursehero.com/assets/img/homepage/tweets/twitter_profile_jenny.jpg
22690
10098.6
https://www.coursehero.com/assets/img/homepage/blog/36_roommate_questions.jpg
25729
9566.05
https://www.coursehero.com/assets/img/homepage/blog/days_worth_of_fun.jpg
19829
9482
https://www.coursehero.com/assets/img/homepage/blog/the_best_way_to_take_notes.jpg
18038
9220.15
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Initial server response time was short — Root document took 290 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://www.coursehero.com/
290.577
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Coursehero.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles — Potential savings of 56 KiB
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Source Transfer Size (Bytes) Potential Savings (Bytes)
run/monolith-build/src/Control/assets/js/vendor/ng/select/select.js
12781
node_modules/react-query
12478
Other
9277
node_modules/downshift
4943
js/src/search/legacy/store/filter-store.ts
3704
js/src/utils/service/amplitude-service.ts
3243
run/monolith-build/src/Control/assets/js/vendor/ng/select/angular-sanitize.js
2407
node_modules/es-abstract
1953
js/src/common/component/school-search.tsx
1738
node_modules/react-granite
1559
node_modules/react-popper
1272
node_modules/react-is
1201
js/src/search/legacy/view/filter/autocomplete-filter.tsx
1134
Avoid serving legacy JavaScript to modern browsers — Potential savings of 47 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
URL Potential Savings (Bytes)
https://assets.coursehero.com/assets/legacy/assetic:ch-editor-tm.23065ada.js
15003
https://apis.google.com/js/platform.js
8826
https://cdn.cookielaw.org/scripttemplates/202210.1.0/otBannerSdk.js
6590
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/chunk.vendors~qa/ask-expert-tutors/app.02fcd82c6e2e7ef05fc7.js
6066
https://cdnjs.cloudflare.com/ajax/libs/rollbar.js/2.13.0/rollbar.min.js
5755
https://www.coursehero.com/sym-assets/js/bundle-67a17ce-2e95563.js
5619
https://assets.coursehero.com/assets/legacy/layout-bundle:masterUnoptimizedHead.ceab7d58.js
101
https://snap.licdn.com/li.lms-analytics/insight.min.js
63
https://cdn.amplitude.com/libs/amplitude-7.1.0-min.gz.js
55
https://f.vimeocdn.com/p/4.13.5/js/vendor.module.js
49
https://www.coursehero.com/sym-assets/js/homepage-app-e7fc531-27eba13.js
44
Preload Largest Contentful Paint image
It is recommended to preload images used by LCP elements, to improve LCP time.
Avoid chaining critical requests — 17 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Coursehero.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
All text remains visible during webfont loads
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
Keep request counts low and transfer sizes small — 153 requests • 3,814 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
153
3905684
Script
51
2825706
Image
39
595929
Stylesheet
17
189572
Font
5
144616
Document
4
89840
Other
37
60021
Media
0
0
Third-party
79
1532139
Minimize third-party usage — Third-party code blocked the main thread for 150 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
SHOW DETAILS
648929
119.347
SHOW DETAILS
180149
17.973
SHOW DETAILS
21283
9.148
SHOW DETAILS
170990
0
SHOW DETAILS
163550
0
SHOW DETAILS
90829
0
SHOW DETAILS
68581
0
SHOW DETAILS
56799
0
SHOW DETAILS
23349
0
SHOW DETAILS
20721
0
SHOW DETAILS
20441
0
SHOW DETAILS
19932
0
SHOW DETAILS
19249
0
SHOW DETAILS
10218
0
SHOW DETAILS
6950
0
SHOW DETAILS
5464
0
SHOW DETAILS
1182
0
SHOW DETAILS
664
0
SHOW DETAILS
575
0
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
Make every study hour count Access 100 million course-specific study materials…
Largest Contentful Paint image was not lazily loaded
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint.
Element
Make every study hour count Access 100 million course-specific study materials…
Avoid large layout shifts — 3 elements found
Below is a list of all DOM elements that contribute to the CLS of the page.
Element CLS Contribution
Make every study hour count Access 100 million course-specific study materials…
0.046376811594203
Are you an educator?  Learn more
0.0010305958132045
div.gh-relative > button#headlessui-popover-button-2 > span.gh-flex > svg.gh-ml-4
1.5404372063159E-6
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 15 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://assets.coursehero.com/assets/legacy/assetic:ch-editor-tm.23065ada.js
4952
685
https://www.coursehero.com/assets/js/compiled/qa/widget/chunk.vendors~qa/widget/app.aa3e11c7ba4d0650422e.js
5743
222
https://assets.coursehero.com/assets/legacy/layout-bundle:masterUnoptimizedHead.ceab7d58.js
3892
188
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
3430
163
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
3593
132
https://www.coursehero.com/
6081
121
https://www.coursehero.com/_Incapsula_Resource?SWJIYLWA=719d34d31c8e3a6e6fffd425f7e032f3&ns=2&cb=994514759
5637
106
https://assets.coursehero.com/ssi/ssiglobalHeaderFragment.bb18dce7418c69b62d5e.bundle.js
1752
90
https://www.google-analytics.com/analytics.js
1099
89
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
3806
86
https://www.coursehero.com/sym-assets/js/bundle-67a17ce-2e95563.js
4130
82
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
3725
81
https://www.googletagmanager.com/gtm.js?id=GTM-DK9F
2144
72
https://www.googletagmanager.com/gtm.js?id=GTM-DK9F
2067
64
https://www.coursehero.com/Babout-at-I-daressentlesse-a-crue-an-endone-to-N
6234
59
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of coursehero.com on mobile screens.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Audits

Network Requests
Below is a list of network requests that were made during page load.
URL Protocol Start Time (Ms) End Time (Ms) Transfer Size (Bytes) Resource Size (Bytes) Status Code MIME Type Resource Type
http://coursehero.com/
http/1.1
0
55.871000047773
342
0
301
text/plain
https://coursehero.com/
http/1.1
56.225999956951
142.1749999281
389
0
301
text/plain
https://www.coursehero.com/
h2
142.52600003965
432.11099994369
67030
407005
200
text/html
Document
https://www.coursehero.com/assets/fonts/HaasGrotesk.css?v=2
h2
442.29299994186
474.87400006503
1290
3027
200
text/css
Stylesheet
https://www.coursehero.com/assets/fonts/Icons.css?v=atdzta
h2
443.35400010459
493.07700013742
5979
28744
200
text/css
Stylesheet
https://www.coursehero.com/assets/fonts/sub/ch-icon.woff2?hdzuyw
h2
443.68300004862
475.83300014958
74898
74100
200
application/font-woff2
Font
https://www.coursehero.com/ch-assets/granite/v1/granite.min.css
h2
444.48800012469
482.40300011821
23920
141629
200
text/css
Stylesheet
https://www.coursehero.com/assets/img/coursehero-logo.svg
h2
983.41400013305
1013.6939999647
1681
2153
200
image/svg+xml
Image
https://www.coursehero.com/assets/img/coursehero-logotype_white.svg
h2
983.59700012952
1015.1390000246
1073
198
200
image/svg+xml
Image
https://assets.coursehero.com/ssi/ssiGlobalRuntime.2b124abcbc8b00f27310.bundle.js
h2
444.84600005671
476.33199999109
1559
1600
200
application/javascript
Script
https://assets.coursehero.com/ssi/vendors.ddbca6c77771b376f9a5.bundle.js
h2
445.05400001071
505.63000002876
78220
244235
200
application/javascript
Script
https://assets.coursehero.com/ssi/ssiglobalHeaderFragment.bb18dce7418c69b62d5e.bundle.js
h2
445.18900010735
506.59899995662
45661
243071
200
application/javascript
Script
https://www.coursehero.com/Babout-at-I-daressentlesse-a-crue-an-endone-to-N
h2
983.8330000639
1037.982000038
55157
174766
200
text/javascript
Script
https://www.coursehero.com/sym-assets/css/0cb6bca-4db6a26.css
h2
456.02599997073
501.392000122
8494
42622
200
text/css
Stylesheet
https://www.coursehero.com/assets/js/compiled/growth/uploader/smartscan-navbar/index.27e22c15586929f1e230.css
h2
456.77700010128
499.12600009702
1885
3040
200
text/css
Stylesheet
https://www.coursehero.com/sym-assets/css/1e752e7-6f99a8a.css
h2
457.11300009862
495.57900009677
13568
67518
200
text/css
Stylesheet
https://www.coursehero.com/sym-assets/css/dd9725c-fc7f09f.css
h2
457.34199997969
494.12299995311
2955
13748
200
text/css
Stylesheet
https://www.coursehero.com/sym-assets/css/3331fc0-35242c2.css
h2
457.49900001101
492.36000003293
1182
653
200
text/css
Stylesheet
https://cdn.cookielaw.org/consent/020007b9-7f08-4600-aa15-099b43fd900b/OtAutoBlock.js
h2
457.94999995269
491.49699998088
2814
5219
200
application/x-javascript
Script
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js
h2
458.12400011346
488.56500000693
8030
21748
200
application/javascript
Script
https://assets.coursehero.com/assets/legacy/layout-bundle:masterUnoptimizedHead.ceab7d58.js
h2
458.30700010993
712.32900000177
431026
1727366
200
application/javascript
Script
https://www.coursehero.com/assets/img/homepage/hero_image.jpg
h2
983.95000002347
1064.7180001251
177870
176941
200
image/jpeg
Image
https://www.google-analytics.com/analytics.js
h2
984.12699997425
993.76700003631
20664
50230
200
text/javascript
Script
https://www.googletagmanager.com/gtag/js?id=G-HR7CRKGJMD
h2
984.35800010338
1008.9710000902
77242
219331
200
application/javascript
Script
https://assets.coursehero.com/ssi/27b7037f838acd0278f7.svg
h2
984.58499996923
1015.5919999816
2863
6007
200
image/svg+xml
Image
https://www.coursehero.com/assets/img/qa/homework_landing/expert-tutors.svg
h2
984.88300014287
1063.3660000749
7868
19816
200
image/svg+xml
Image
https://www.coursehero.com/assets/img/qa/homework_landing/step-by-step.svg
h2
985.22299993783
1035.3540000506
3289
8272
200
image/svg+xml
Image
https://www.coursehero.com/assets/img/qa/homework_landing/fast-answers.svg
h2
985.35900004208
1016.319999937
4439
10016
200
image/svg+xml
Image
https://www.coursehero.com/assets/img/blank.gif
h2
985.52500014193
1014.0980000142
1018
66
200
image/gif
Image
https://www.coursehero.com/assets/img/homepage/upload_2019.svg
h2
985.67300010473
1018.4679999948
6193
13314
200
image/svg+xml
Image
https://www.coursehero.com/assets/img/homepage/subscribe_2019.svg
h2
985.89200014248
1021.6560000554
7313
16275
200
image/svg+xml
Image
https://www.coursehero.com/assets/img/homepage/blog/36_roommate_questions.jpg
h2
986.24400002882
1022.8059999645
26661
25729
200
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https://www.gstatic.com/recaptcha/releases/jF-AgDWy8ih0GfLx4Semh9UK/recaptcha__en.js
h2
4301.0609999765
4313.4999999311
163550
408610
200
text/javascript
Script
https://connect.facebook.net/en_US/sdk.js?hash=9ae9779795e708cf72a078625dc02740
h2
4302.5140000973
4321.6699999757
87861
307557
200
application/x-javascript
Script
https://vimeo.com/ablincoln/vuid?pid=2938a8915a047aa3c53edebedd3c8325ae2e5eb61668375667
4317.1429999638
4554.2650001589
0
0
-1
Ping
https://www.linkedin.com/px/li_sync?redirect=https%3A%2F%2Fpx.ads.linkedin.com%2Fcollect%3Fv%3D2%26fmt%3Djs%26pid%3D1286092%26time%3D1668375670114%26url%3Dhttps%253A%252F%252Fwww.coursehero.com%252F%26cookiesTest%3Dtrue%26liSync%3Dtrue
http/1.1
4318.8219999429
4555.544000119
2294
0
302
text/plain
https://cdn.cookielaw.org/logos/265c1602-2645-42a0-9388-484739b10fd3/5817a35c-82a4-4bed-86d6-71b98b9acaed/e3803b9f-280e-45f1-8abc-9ff922c6c05d/CMYK-course-hero-logo.png
h2
4551.0500001255
4578.0430000741
26098
25272
200
image/png
Image
https://cdn.cookielaw.org/logos/static/poweredBy_ot_logo.svg
h2
4551.4170001261
4573.6400000751
2323
2998
200
image/svg+xml
Image
https://px.ads.linkedin.com/collect?v=2&fmt=js&pid=1286092&time=1668375670114&url=https%3A%2F%2Fwww.coursehero.com%2F&cookiesTest=true&liSync=true
http/1.1
4556.0290000867
4719.0910000354
720
0
302
text/plain
https://p.adsymptotic.com/d/px/?_pid=16218&_psign=0aa5badf92527f7732e22463d6fa4dbc&coopa=0&gdpr=0&gdpr_consent=&_puuid=d87ab83f-4077-4426-90a7-324e5632b58b
http/1.1
4719.4110001437
4773.2220001053
583
0
302
text/plain
https://www.coursehero.com/Babout-at-I-daressentlesse-a-crue-an-endone-to-N?d=www.coursehero.com
h2
4774.9390001409
4841.7140000965
1355
822
200
application/json
Fetch
https://p.adsymptotic.com/d/px/?_pid=16218&_psign=0aa5badf92527f7732e22463d6fa4dbc&coopa=0&gdpr=0&gdpr_consent=&_puuid=d87ab83f-4077-4426-90a7-324e5632b58b&_expected_cookie=f53cac038297d10d26b716b525852436
h2
4778.4240001347
4808.8730000891
399
43
200
image/gif
Image
https://api.coursehero.com/v1/data-tracking
h2
4823.9329999778
4922.2160000354
620
0
200
application/json
Preflight
https://js-agent.newrelic.com/nr-spa-1216.min.js
h2
4814.2440000083
4834.9540000781
18911
50049
200
application/javascript
Script
https://api.coursehero.com/v1/data-tracking
h2
4922.9650001507
5252.9850001447
492
2
200
application/json
Fetch
https://assets.coursehero.com/assets/legacy/assetic:ch-editor-tm.b1ff1a77.css
h2
4826.6160001513
4860.4010001291
4108
24545
200
text/css
Stylesheet
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/chunk.vendors~qa/ask-expert-tutors/app.02fcd82c6e2e7ef05fc7.css
h2
4826.8150000367
4854.7720001079
1232
934
200
text/css
Stylesheet
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/app.3dac923c12a7c98c4691.css
h2
4827.2069999948
4875.1720001455
37242
304431
200
text/css
Stylesheet
https://zn1ttxdo6pi4mebp8-coursehero.siteintercept.qualtrics.com/SIE/?Q_ZID=ZN_1TtxDO6Pi4MeBP8
h2
4828.8760001305
4885.4030000512
3890
7302
200
application/javascript
Script
https://radar.cedexis.com/1/22246/radar.js
http/1.1
4844.3810001481
4934.4320001546
390
0
302
text/html
https://bam.nr-data.net/1/404bf9505f?a=136461810,1502219757&v=1216.487a282&to=NVFbZUFUC0RTAEcLXQwbekRAQQpaHQtcD1cSVV5U&rst=4873&ck=1&ref=https://www.coursehero.com/&ap=170&be=476&fe=4814&dc=2841&af=err,xhr,stn,ins,spa&perf=%7B%22timing%22:%7B%22of%22:1668375666472,%22n%22:0,%22f%22:143,%22dn%22:143,%22dne%22:143,%22c%22:143,%22ce%22:143,%22rq%22:143,%22rp%22:433,%22rpe%22:433,%22dl%22:441,%22di%22:2772,%22ds%22:2841,%22de%22:3216,%22dc%22:4812,%22l%22:4814,%22le%22:4834%7D,%22navigation%22:%7B%7D%7D&fp=1065&fcp=1065&at=GRZMEwlOGBsQAhFYSR9J&jsonp=NREUM.setToken
http/1.1
4873.9869999699
5129.0750000626
615
49
200
text/javascript
Script
https://radar.cedexis.com/1621860284/radar.js
h2
4935.6410000473
4982.372000115
19149
44897
200
application/javascript
Script
https://siteintercept.qualtrics.com/dxjsmodule/11.6d6c5ef8794769da04fd.chunk.js?Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web&Q_BRANDID=www.coursehero.com
h2
5046.6710000765
5084.3279999681
19829
62816
200
application/javascript
Script
https://i2-gqjavhixgjziupccsrfijmbeqlikbi.init.cedexis-radar.net/i2/1/22246/j1/20/123/1668375671/0/0/providers.json?imagesok=1&n=1&p=1&r=1&s=1&t=1
http/1.1
5054.6820000745
5178.6670000292
1182
3724
200
application/json
XHR
https://siteintercept.qualtrics.com/WRSiteInterceptEngine/Targeting.php?Q_ZoneID=ZN_1TtxDO6Pi4MeBP8&Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web
h2
5095.6470000092
5286.6960000247
2643
12857
200
application/json
XHR
https://siteintercept.qualtrics.com/dxjsmodule/CoreModule.js?Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web&Q_BRANDID=coursehero
h2
5294.9030001182
5345.871000085
33229
104546
200
application/javascript
Script
https://siteintercept.qualtrics.com/dxjsmodule/4.a5c0de52a5fc4b1cbc4b.chunk.js?Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web&Q_BRANDID=coursehero
h2
5399.952000007
5436.9540000334
1577
1754
200
application/javascript
Script
https://siteintercept.qualtrics.com/dxjsmodule/1.8ce69394dfc154e65174.chunk.js?Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web&Q_BRANDID=coursehero
h2
5401.4060001355
5437.4240001198
7413
28783
200
application/javascript
Script
https://bam.nr-data.net/events/1/404bf9505f?a=136461810,1502219757&v=1216.487a282&to=NVFbZUFUC0RTAEcLXQwbekRAQQpaHQtcD1cSVV5U&rst=6670&ck=1&ref=https://www.coursehero.com/
http/1.1
6671.4600000996
6775.4250001162
406
24
200
image/gif
XHR
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
439.153
31.674
471.173
14.897
494.263
5.691
519.13
15.504
557.842
5.92
716.861
6.011
749.591
20.508
770.112
188.487
959.397
5.728
967.311
22.638
989.965
50.431
1053.208
6.735
1074.868
5.995
1081.403
6.84
1093.904
5.361
1126.197
685.42
1811.925
73.948
1910.152
14.711
1924.876
82.159
2007.28
25.128
2035.259
11.612
2047.607
49.276
2097.536
8.038
2105.622
30.609
2136.372
10.089
2146.599
26.742
2173.41
13.108
2189.297
15.918
2205.5
16.863
2222.593
20.629
2245.382
5.978
2251.401
22.639
2278.518
6.119
2289.146
17.442
2307.12
38.493
2345.668
63.989
2409.735
11.296
2425.579
16.449
2443.045
12.794
2458.165
7.666
2465.921
9.797
2475.742
179.548
2655.318
10.236
2665.633
105.808
2771.553
444.621
3216.225
15.145
3231.391
9.767
3248.469
89.444
3345.877
6.884
3354.353
28.809
3383.474
7.096
3406.536
28.179
3438.217
5.028
3450.084
71.668
3521.778
5.63
3531.849
9.589
3541.67
10.621
3569.29
11.32
3585.945
42.73
3628.731
6.371
3635.176
8.811
3644.181
163.23
3808.754
131.762
3940.576
7.242
3947.862
43.706
3996.977
7.661
4021.128
10.198
4031.449
44.059
4075.978
6.736
4087.249
5.604
4099.471
80.955
4185.565
86
4273.059
17.341
4303.734
12.383
4334.243
121.196
4457.644
94.627
4568.412
10.786
4580.715
5.374
4587.702
7.608
4605.854
31.832
4637.705
58.512
4698.882
21.297
4722.849
7.694
4734.438
39.781
4812.071
27.719
4851.361
5.577
4859.532
15.557
4876.97
45.985
4924.346
11.109
4937.176
75.069
5013.038
29.657
5048.572
6.473
5089.752
7.324
5132.167
12.992
5288.686
8.428
5354.078
15.114
5397.885
5.56
6667.062
5.632
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data
Script Treemap Data
Provide as required, for treemap app.

Metrics

First Contentful Paint — 1.5 s
The time taken for the first image or text on the page to be rendered.

Audits

First Meaningful Paint — 1.5 s
The time taken for the primary content of the page to be rendered.

Other

Eliminate render-blocking resources — Potential savings of 590 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Coursehero.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
URL Transfer Size (Bytes) Potential Savings (Ms)
https://cdn.cookielaw.org/consent/020007b9-7f08-4600-aa15-099b43fd900b/OtAutoBlock.js
2814
230
https://assets.coursehero.com/assets/legacy/layout-bundle:masterUnoptimizedHead.ceab7d58.js
431026
360
Avoid multiple page redirects — Potential savings of 340 ms
Redirects can cause additional delays before the page can begin loading. Coursehero.com should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://coursehero.com/
190
https://coursehero.com/
150
https://www.coursehero.com/
0
Avoid enormous network payloads — Total size was 3,814 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://assets.coursehero.com/assets/legacy/layout-bundle:masterUnoptimizedHead.ceab7d58.js
431026
https://assets.coursehero.com/assets/legacy/assetic:ch-editor-tm.23065ada.js
428653
https://www.coursehero.com/sym-assets/js/bundle-67a17ce-2e95563.js
236830
https://www.coursehero.com/assets/img/homepage/hero_image.jpg
177870
https://www.gstatic.com/recaptcha/releases/jF-AgDWy8ih0GfLx4Semh9UK/recaptcha__en.js
163550
https://f.vimeocdn.com/p/4.13.5/js/vendor.module.js
118414
https://f.vimeocdn.com/p/4.13.5/js/vendor.module.js
118414
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
115140
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
115140
https://www.googletagmanager.com/gtm.js?id=GTM-DK9F
102907
Reduce JavaScript execution time — 2.7 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://www.coursehero.com/
1589.59
858.558
14.225
https://assets.coursehero.com/assets/legacy/assetic:ch-editor-tm.23065ada.js
618.333
569.496
48.416
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
502.783
424.141
2.295
Unattributable
346.989
20.62
0
https://assets.coursehero.com/assets/legacy/layout-bundle:masterUnoptimizedHead.ceab7d58.js
188.487
160.531
26.671
https://assets.coursehero.com/ssi/ssiglobalHeaderFragment.bb18dce7418c69b62d5e.bundle.js
179.548
102.926
6.9
https://www.google-analytics.com/analytics.js
117.039
28.467
1.165
https://cdn.cookielaw.org/scripttemplates/202210.1.0/otBannerSdk.js
111.27
72.84
11.08
https://www.coursehero.com/_Incapsula_Resource?SWJIYLWA=719d34d31c8e3a6e6fffd425f7e032f3&ns=2&cb=994514759
105.808
102.351
2.338
https://www.googletagmanager.com/gtm.js?id=GTM-DK9F
97.137
82.627
7.748
https://www.coursehero.com/sym-assets/js/bundle-67a17ce-2e95563.js
82.159
66.077
15.728
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/app.c003542512e25696778c.js
53.954
49.044
4.91

Metrics

Time to Interactive — 5.9 s
The time taken for the page to become fully interactive.
Speed Index — 2.6 s
The time taken for the page contents to be visibly populated.
Total Blocking Time — 1,210 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).
Largest Contentful Paint — 3.2 s
The timing of the largest text or image that is painted.

Audits

Max Potential First Input Delay — 690 ms
Users could experience a delay when interacting with the page.

Other

Reduce unused JavaScript — Potential savings of 867 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.coursehero.com/sym-assets/js/bundle-67a17ce-2e95563.js
236830
156147
https://www.gstatic.com/recaptcha/releases/jF-AgDWy8ih0GfLx4Semh9UK/recaptcha__en.js
163550
130054
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
115140
71862
https://f.vimeocdn.com/p/4.13.5/js/vendor.module.js
118414
68637
https://connect.facebook.net/en_US/sdk.js?hash=9ae9779795e708cf72a078625dc02740
87861
65025
https://www.coursehero.com/assets/js/compiled/growth/uploader/smartscan-navbar/chunk.vendors~growth/uploader/smartscan-navbar/index.ae8dea8b9df6fce98e96.js
74084
63964
https://assets.coursehero.com/ssi/vendors.ddbca6c77771b376f9a5.bundle.js
78220
56278
https://cdn.cookielaw.org/scripttemplates/202210.1.0/otBannerSdk.js
94044
54094
https://www.youtube.com/s/player/c4225c42/www-widgetapi.vflset/www-widgetapi.js
54669
45402
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/chunk.vendors~qa/ask-expert-tutors/app.02fcd82c6e2e7ef05fc7.js
60659
37596
https://www.googletagmanager.com/gtm.js?id=GTM-DK9F
102907
36699
https://www.googletagmanager.com/gtag/js?id=G-HR7CRKGJMD
77242
30653
https://www.coursehero.com/sym-assets/js/homepage-app-e7fc531-27eba13.js
41956
25202
https://siteintercept.qualtrics.com/dxjsmodule/CoreModule.js?Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web&Q_BRANDID=coursehero
33229
23973
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/app.c003542512e25696778c.js
53979
22254
Serve static assets with an efficient cache policy — 39 resources found
Coursehero.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://bam.nr-data.net/1/404bf9505f?a=136461810,1502219757&v=1216.487a282&to=NVFbZUFUC0RTAEcLXQwbekRAQQpaHQtcD1cSVV5U&rst=4873&ck=1&ref=https://www.coursehero.com/&ap=170&be=476&fe=4814&dc=2841&af=err,xhr,stn,ins,spa&perf=%7B%22timing%22:%7B%22of%22:1668375666472,%22n%22:0,%22f%22:143,%22dn%22:143,%22dne%22:143,%22c%22:143,%22ce%22:143,%22rq%22:143,%22rp%22:433,%22rpe%22:433,%22dl%22:441,%22di%22:2772,%22ds%22:2841,%22de%22:3216,%22dc%22:4812,%22l%22:4814,%22le%22:4834%7D,%22navigation%22:%7B%7D%7D&fp=1065&fcp=1065&at=GRZMEwlOGBsQAhFYSR9J&jsonp=NREUM.setToken
0
615
https://p.adsymptotic.com/d/px/?_pid=16218&_psign=0aa5badf92527f7732e22463d6fa4dbc&coopa=0&gdpr=0&gdpr_consent=&_puuid=d87ab83f-4077-4426-90a7-324e5632b58b&_expected_cookie=f53cac038297d10d26b716b525852436
0
399
https://www.facebook.com/tr?id=1915956025394562&ev=PageView
0
328
https://zn1ttxdo6pi4mebp8-coursehero.siteintercept.qualtrics.com/SIE/?Q_ZID=ZN_1TtxDO6Pi4MeBP8
3600000
3890
https://www.google-analytics.com/analytics.js
7200000
20664
https://js-agent.newrelic.com/nr-spa-1216.min.js
7200000
18911
https://snap.licdn.com/li.lms-analytics/insight.min.js
43878000
4815
https://www.coursehero.com/sym-assets/js/bundle-67a17ce-2e95563.js
86400000
236830
https://cdn.cookielaw.org/scripttemplates/202210.1.0/otBannerSdk.js
86400000
94044
https://www.coursehero.com/assets/js/compiled/growth/uploader/smartscan-navbar/chunk.vendors~growth/uploader/smartscan-navbar/index.ae8dea8b9df6fce98e96.js
86400000
74084
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/chunk.vendors~qa/ask-expert-tutors/app.02fcd82c6e2e7ef05fc7.js
86400000
60659
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/app.c003542512e25696778c.js
86400000
53979
https://www.coursehero.com/sym-assets/js/homepage-app-e7fc531-27eba13.js
86400000
41956
https://cdn.cookielaw.org/logos/265c1602-2645-42a0-9388-484739b10fd3/5817a35c-82a4-4bed-86d6-71b98b9acaed/e3803b9f-280e-45f1-8abc-9ff922c6c05d/CMYK-course-hero-logo.png
86400000
26098
https://www.coursehero.com/assets/js/compiled/qa/widget/chunk.vendors~qa/widget/app.aa3e11c7ba4d0650422e.js
86400000
10514
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js
86400000
8030
https://www.coursehero.com/assets/js/compiled/qa/widget/app.428a8e2eb68f526783c3.js
86400000
7737
https://www.coursehero.com/assets/js/compiled/growth/uploader/smartscan-navbar/index.6281e010d243bbb11c17.js
86400000
4336
https://www.coursehero.com/sym-assets/js/bundle-3593e6a-24cca70.js
86400000
3102
https://cdn.cookielaw.org/consent/020007b9-7f08-4600-aa15-099b43fd900b/OtAutoBlock.js
86400000
2814
https://cdn.cookielaw.org/logos/static/poweredBy_ot_logo.svg
86400000
2323
https://siteintercept.qualtrics.com/dxjsmodule/CoreModule.js?Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web&Q_BRANDID=coursehero
604800000
33229
https://siteintercept.qualtrics.com/dxjsmodule/11.6d6c5ef8794769da04fd.chunk.js?Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web&Q_BRANDID=www.coursehero.com
604800000
19829
https://siteintercept.qualtrics.com/dxjsmodule/1.8ce69394dfc154e65174.chunk.js?Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web&Q_BRANDID=coursehero
604800000
7413
https://siteintercept.qualtrics.com/dxjsmodule/4.a5c0de52a5fc4b1cbc4b.chunk.js?Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web&Q_BRANDID=coursehero
604800000
1577
https://f.vimeocdn.com/p/4.13.5/js/vendor.module.js
1209600000
118414
https://f.vimeocdn.com/p/4.13.5/js/vendor.module.js
1209600000
118414
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
1209600000
115140
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
1209600000
115140
https://f.vimeocdn.com/p/4.13.5/css/player.css
1209600000
21157
https://f.vimeocdn.com/p/4.13.5/css/player.css
1209600000
21157
https://radar.cedexis.com/1621860284/radar.js
1209600000
19149
https://i.vimeocdn.com/video/655474549-6c6bca16afef15643dc0f5fb7746a61eb6db9cfbeae3bdfa0563155636f6c59d-d
2592000000
74872
https://i.vimeocdn.com/video/656417220-b5e3e12f6b1897aacfb84c25149b89a62ffb853d06c00b7eb4ed8c6ea1a80242-d
2592000000
35827
https://i.vimeocdn.com/video/655474549-6c6bca16afef15643dc0f5fb7746a61eb6db9cfbeae3bdfa0563155636f6c59d-d.jpg?mw=80&q=85
2592000000
2427
https://i.vimeocdn.com/video/656417220-b5e3e12f6b1897aacfb84c25149b89a62ffb853d06c00b7eb4ed8c6ea1a80242-d.jpg?mw=80&q=85
2592000000
2029
https://f.vimeocdn.com/js_opt/modules/utils/vuid.min.js
2592000000
1408
https://f.vimeocdn.com/js_opt/modules/utils/vuid.min.js
2592000000
1408
https://www.coursehero.com/ch-assets/granite/v1/granite.min.css
2628000000
23920
Avoid an excessive DOM size — 2,019 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
2019
Maximum DOM Depth
a > div.hp_course_card_single > figure > div.owl-lazy
18
Maximum Child Elements
Liberty University 584K documents 47K questions Grand Canyon University 529K do…
100
Minimize main-thread work — 4.5 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
2846.672
Other
543.03599999999
Style & Layout
501.038
Script Parsing & Compilation
214.862
Garbage Collection
186.455
Parse HTML & CSS
168.804
Rendering
87.12
Some third-party resources can be lazy loaded with a facade — 1 facade alternative available
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Product Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
Vimeo Embedded Player (Video)
648929
119.347
Does not use passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Source
SHOW DETAILS
SHOW DETAILS
Image elements do not have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
URL
https://www.coursehero.com/assets/img/homepage/tweets/twitter_profile_jenny.jpg
https://www.coursehero.com/assets/img/homepage/tweets/twitter_profile_rocky.jpg
https://www.coursehero.com/assets/img/homepage/tweets/twitter_profile_tso.jpg
https://www.coursehero.com/assets/img/homepage/subscribe_2019.svg
https://www.coursehero.com/assets/img/homepage/upload_2019.svg
https://www.coursehero.com/assets/img/qa/homework_landing/expert-tutors.svg
https://www.coursehero.com/assets/img/qa/homework_landing/step-by-step.svg
https://www.coursehero.com/assets/img/qa/homework_landing/fast-answers.svg
https://www.coursehero.com/assets/img/blank.gif
https://www.coursehero.com/assets/img/blank.gif
https://www.coursehero.com/assets/img/blank.gif
https://www.coursehero.com/assets/img/blank.gif
https://www.coursehero.com/assets/img/blank.gif
https://www.coursehero.com/assets/img/blank.gif
https://www.coursehero.com/assets/img/blank.gif
Registers an `unload` listener
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.
Source
SHOW DETAILS
88

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of coursehero.com. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Names and labels

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
`<frame>` or `<iframe>` elements have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
Links have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.
`<object>` elements have alternate text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Coursehero.com may provide assistance to deaf or hearing-impaired users with captions on videos.

Names and labels

Buttons do not have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Failing Elements
div.hp_course_card_wrapper > div.hp_course_card_container > div.owl-nav > button.owl-next
div.hp_course_card_wrapper > div.hp_course_card_container > div.owl-dots > button.owl-dot
div.hp_course_card_wrapper > div.hp_course_card_container > div.owl-dots > button.owl-dot
div.hp_course_card_wrapper > div.hp_course_card_container > div.owl-dots > button.owl-dot
div.hp_course_card_wrapper > div.hp_course_card_container > div.owl-dots > button.owl-dot
div.hp_twitter_wrapper > div.hp_twitter_bundle > div.owl-nav > button.owl-next
div.hp_twitter_wrapper > div.hp_twitter_bundle > div.owl-dots > button.owl-dot
div.hp_twitter_wrapper > div.hp_twitter_bundle > div.owl-dots > button.owl-dot

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements
@tsolllkurdian
@Jenneigh_
@_racquelpillar
@BlewTgod
@__erinnnnnn
@Dr_Jordan4

Navigation

Heading elements are not in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
Failing Elements
FIN 300
Some elements have a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.
Failing Elements
Find Your Course

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
75

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that coursehero.com should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Ensure CSP is effective against XSS attacks
Significantly reduce the risk of cross-site scripting attacks (XSS) by ensuring you have a strong Content Security Policy (CSP).
Description Directive Severity
script-src directive is missing. This can allow the execution of unsafe scripts.
script-src
High
Missing object-src allows the injection of plugins that execute unsafe scripts. Consider setting object-src to 'none' if you can.
object-src
High

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
jQuery
2.2.4
React
17.0.2
Lo-Dash
4.17.21
LABjs
AngularJS
1.3.20
Moment.js
2.29.1
core-js
core-js-global@3.8.1
No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://coursehero.com/
Allowed
Includes front-end JavaScript libraries with known security vulnerabilities — 20 vulnerabilities detected
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Library Version Vulnerability Count Highest Severity
SHOW DETAILS
4
Medium
SHOW DETAILS
15
High
SHOW DETAILS
1
High

Audits

Uses deprecated APIs — 1 warning found
Avoid deprecated APIs which will eventually be removed the browser.
Deprecation / Warning Source
...
SHOW DETAILS
Missing source maps for large first-party JavaScript
Consider deploying source maps for added benefits such as the ability to debug while in production.
URL Map URL
https://assets.coursehero.com/assets/legacy/layout-bundle:masterUnoptimizedHead.ceab7d58.js
https://assets.coursehero.com/assets/legacy/assetic:ch-editor-tm.23065ada.js
https://www.coursehero.com/sym-assets/js/bundle-67a17ce-2e95563.js
https://www.coursehero.com/sym-assets/js/bundle-67a17ce-2e95563.js.map
https://www.coursehero.com/sym-assets/js/homepage-app-e7fc531-27eba13.js
https://www.coursehero.com/sym-assets/js/homepage-app-e7fc531-27eba13.js.map
https://www.coursehero.com/sym-assets/js/bundle-3593e6a-24cca70.js
https://www.coursehero.com/sym-assets/js/bundle-3593e6a-24cca70.js.map
https://www.coursehero.com/assets/js/compiled/qa/widget/chunk.vendors~qa/widget/app.aa3e11c7ba4d0650422e.js
https://www.coursehero.com/assets/js/compiled/qa/widget/chunk.vendors~qa/widget/app.aa3e11c7ba4d0650422e.js.map
https://www.coursehero.com/assets/js/compiled/qa/widget/app.428a8e2eb68f526783c3.js
https://www.coursehero.com/assets/js/compiled/qa/widget/app.428a8e2eb68f526783c3.js.map
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/chunk.vendors~qa/ask-expert-tutors/app.02fcd82c6e2e7ef05fc7.js
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/chunk.vendors~qa/ask-expert-tutors/app.02fcd82c6e2e7ef05fc7.js.map
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/app.c003542512e25696778c.js
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/app.c003542512e25696778c.js.map
https://www.coursehero.com/assets/js/compiled/growth/uploader/smartscan-navbar/index.6281e010d243bbb11c17.js
https://www.coursehero.com/assets/js/compiled/growth/uploader/smartscan-navbar/index.6281e010d243bbb11c17.js.map
https://www.coursehero.com/assets/js/compiled/growth/uploader/smartscan-navbar/chunk.vendors~growth/uploader/smartscan-navbar/index.ae8dea8b9df6fce98e96.js
https://www.coursehero.com/assets/js/compiled/growth/uploader/smartscan-navbar/chunk.vendors~growth/uploader/smartscan-navbar/index.ae8dea8b9df6fce98e96.js.map
https://assets.coursehero.com/ssi/vendors.ddbca6c77771b376f9a5.bundle.js
https://assets.coursehero.com/ssi/vendors.ddbca6c77771b376f9a5.bundle.js.map
https://assets.coursehero.com/ssi/ssiGlobalRuntime.2b124abcbc8b00f27310.bundle.js
https://assets.coursehero.com/ssi/ssiGlobalRuntime.2b124abcbc8b00f27310.bundle.js.map
https://assets.coursehero.com/ssi/ssiglobalHeaderFragment.bb18dce7418c69b62d5e.bundle.js
https://assets.coursehero.com/ssi/ssiglobalHeaderFragment.bb18dce7418c69b62d5e.bundle.js.map
83

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for coursehero.com. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of coursehero.com on mobile screens.
Document uses legible font sizes
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Tap targets are sized appropriately
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Content Best Practices

Links do not have descriptive text — 1 link found
Make use of descriptive link text to assist search engines in understanding the content.

Crawling and Indexing

Links are not crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
78

PWA

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of coursehero.com. This includes details about web app manifests.

Installable

Web app manifest and service worker meet the installability requirements
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.

PWA Optimized

Configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Sets a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of coursehero.com on mobile screens.
Provides a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Avg. (All Categories) 69
Performance 10
Accessibility 94
Best Practices 75
SEO 86
PWA 80
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://www.coursehero.com/
Updated: 13th November, 2022

2.56 seconds
First Contentful Paint (FCP)
53%
28%
19%

0.18 seconds
First Input Delay (FID)
67%
16%
17%

Simulate loading on mobile
10

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for coursehero.com. This includes details about optimizing page load times which can result in a better user experience.

Other

Properly size images — Potential savings of 16 KiB
Images can slow down the page's load time. Coursehero.com should consider serving more appropriate-sized images.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://www.coursehero.com/assets/img/homepage/tweets/twitter_profile_tso.jpg
18553
16824
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Coursehero.com should consider minifying CSS files.
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Coursehero.com should consider minifying JS files.
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Initial server response time was short — Root document took 270 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://www.coursehero.com/
273.666
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Coursehero.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Preload Largest Contentful Paint image
It is recommended to preload images used by LCP elements, to improve LCP time.
Avoid chaining critical requests — 17 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Coursehero.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
All text remains visible during webfont loads
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
Keep request counts low and transfer sizes small — 146 requests • 3,552 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
146
3637055
Script
51
2819603
Image
33
334970
Stylesheet
17
189441
Font
5
144702
Document
4
89547
Other
36
58792
Media
0
0
Third-party
79
1502393
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
body > div#ch-body > div > div.main-wrapper
Largest Contentful Paint image was not lazily loaded
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint.
Element
body > div#ch-body > div > div.main-wrapper
Avoid large layout shifts — 5 elements found
Below is a list of all DOM elements that contribute to the CLS of the page.
Element CLS Contribution
Make every study hour count Access 100 million course-specific study materials…
0.092951200619675
Get 24/7 Homework Help Browse Textbooks & Solutions New
0.057809495192308
Find study resources
0.056057692307692
Find study guides, class notes and more.
0.0070487993803253
New
0.00010614395141602
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 20 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://assets.coursehero.com/assets/legacy/assetic:ch-editor-tm.23065ada.js
25455
2879
https://www.coursehero.com/assets/js/compiled/qa/widget/chunk.vendors~qa/widget/app.aa3e11c7ba4d0650422e.js
24540
915
https://assets.coursehero.com/assets/legacy/layout-bundle:masterUnoptimizedHead.ceab7d58.js
19038
821
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
18317
721
https://cdn.amplitude.com/libs/amplitude-7.1.0-min.gz.js
12004
699
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
20105
577
https://www.coursehero.com/Babout-at-I-daressentlesse-a-crue-an-endone-to-N
29574
434
https://www.coursehero.com/
28858
423
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
20747
381
https://www.coursehero.com/sym-assets/js/bundle-67a17ce-2e95563.js
16590
366
https://assets.coursehero.com/ssi/ssiglobalHeaderFragment.bb18dce7418c69b62d5e.bundle.js
8044
339
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
21128
338
https://www.googletagmanager.com/gtm.js?id=GTM-DK9F
9647
253
https://www.coursehero.com/sym-assets/js/bundle-3593e6a-24cca70.js
19859
246
https://cdn.cookielaw.org/scripttemplates/202210.1.0/otBannerSdk.js
3206
216
https://www.coursehero.com/
30181
201
https://www.coursehero.com/
28534
199
https://www.googletagmanager.com/gtm.js?id=GTM-DK9F
9900
182
https://www.coursehero.com/
2759
181
https://www.coursehero.com/
6620
168
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of coursehero.com on mobile screens.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Audits

Network Requests
Below is a list of network requests that were made during page load.
URL Protocol Start Time (Ms) End Time (Ms) Transfer Size (Bytes) Resource Size (Bytes) Status Code MIME Type Resource Type
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h2
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Stylesheet
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h2
827.10699969903
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1758
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image/svg+xml
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https://www.coursehero.com/assets/img/coursehero-logotype_white.svg
h2
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422.00899962336
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Stylesheet
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h2
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h2
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Stylesheet
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h2
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h2
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Script
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h2
423.97099966183
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8030
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Script
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h2
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Script
https://www.coursehero.com/assets/img/homepage/hero_image_mobile.jpg
h2
827.67899986356
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image/webp
Image
https://www.google-analytics.com/analytics.js
h2
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Script
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h2
828.0679997988
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Script
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h2
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Image
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h2
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Image
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h2
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Image
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h2
829.21099988744
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4439
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Image
https://www.coursehero.com/assets/img/blank.gif
h2
829.40199971199
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1019
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200
image/gif
Image
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h2
829.68600001186
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Image
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h2
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Image
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h2
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Image
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h2
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Image
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h2
830.36999963224
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Image
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h2
830.48999961466
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Image
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h2
830.62299992889
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Image
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h2
830.86699992418
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Image
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h2
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Image
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h2
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Stylesheet
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Script
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h2
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Script
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h2
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Script
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h2
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h2
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Script
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h2
568.94699996337
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Script
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h2
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Script
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h2
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Script
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h2
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Script
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h2
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h2
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Script
https://unpkg.com/scrollreveal/dist/scrollreveal.min.js
http/1.1
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h2
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XHR
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Script
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h2
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XHR
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h2
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h2
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h2
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Font
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h2
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Font
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h2
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application/javascript
Script
https://player.vimeo.com/video/233780687
http/1.1
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text/html
Document
https://player.vimeo.com/video/234000438
http/1.1
1003.0459999107
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text/html
Document
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h2
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Stylesheet
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Stylesheet
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h2
1864.8049999028
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Fetch
https://www.youtube.com/iframe_api
h2
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Script
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Stylesheet
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Script
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Stylesheet
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Script
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XHR
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3997.1940000542
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XHR
https://www.coursehero.com/assets/img/qa/widget/illo-gift.svg
h2
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Image
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Script
https://www.gstatic.com/recaptcha/releases/jF-AgDWy8ih0GfLx4Semh9UK/recaptcha__en.js
h2
4208.9859996922
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Script
https://connect.facebook.net/en_US/sdk.js?hash=b2a08d5fd39d85ec7301eafba0da1389
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4230.951000005
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application/x-javascript
Script
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http/1.1
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https://cdn.cookielaw.org/logos/265c1602-2645-42a0-9388-484739b10fd3/5817a35c-82a4-4bed-86d6-71b98b9acaed/e3803b9f-280e-45f1-8abc-9ff922c6c05d/CMYK-course-hero-logo.png
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image/png
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https://cdn.cookielaw.org/logos/static/poweredBy_ot_logo.svg
h2
4377.5059999898
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image/svg+xml
Image
https://www.linkedin.com/px/li_sync?redirect=https%3A%2F%2Fpx.ads.linkedin.com%2Fcollect%3Fv%3D2%26fmt%3Djs%26pid%3D1286092%26time%3D1668375711843%26url%3Dhttps%253A%252F%252Fwww.coursehero.com%252F%26cookiesTest%3Dtrue%26liSync%3Dtrue
http/1.1
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http/1.1
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4802.096999716
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Fetch
https://p.adsymptotic.com/d/px/?_pid=16218&_psign=0aa5badf92527f7732e22463d6fa4dbc&coopa=0&gdpr=0&gdpr_consent=&_puuid=333d4785-eca6-45a3-9c05-86b8215b6568&_expected_cookie=d6a9deebd98a5de893dde22053423721
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Image
https://api.coursehero.com/v1/data-tracking
h2
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Preflight
https://js-agent.newrelic.com/nr-spa-1216.min.js
h2
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Script
https://api.coursehero.com/v1/data-tracking
h2
4888.1919998676
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Fetch
https://assets.coursehero.com/assets/legacy/assetic:ch-editor-tm.b1ff1a77.css
h2
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Stylesheet
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Stylesheet
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Stylesheet
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h2
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Script
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http/1.1
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Script
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5000.9389999323
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application/javascript
Script
https://siteintercept.qualtrics.com/dxjsmodule/11.6d6c5ef8794769da04fd.chunk.js?Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web&Q_BRANDID=www.coursehero.com
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Script
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http/1.1
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application/json
XHR
https://siteintercept.qualtrics.com/WRSiteInterceptEngine/Targeting.php?Q_ZoneID=ZN_1TtxDO6Pi4MeBP8&Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web
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XHR
https://siteintercept.qualtrics.com/dxjsmodule/CoreModule.js?Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web&Q_BRANDID=coursehero
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Script
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Script
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XHR
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
404.422
30.974
435.757
15.68
462.072
7.42
482.852
12.272
520.121
6.118
535.213
5.019
563.606
5.688
569.821
21.903
591.743
205.201
797.769
5.822
806.063
30.588
836.664
36.557
883.64
11.558
908.488
5.343
913.966
18.428
944.411
6.328
970.683
5.917
976.621
719.743
1696.815
90.457
1813.22
8.808
1822.397
16.064
1838.481
91.562
1930.362
27.213
1963.207
11.514
1975.319
61.512
2040.251
41.218
2081.551
33.082
2114.653
11.105
2125.933
14.945
2140.927
31.367
2172.739
18.978
2191.777
13.245
2208.192
19.837
2228.058
24.135
2255.117
5.999
2266.353
6.026
2275.468
41.909
2317.729
13.091
2330.861
63.214
2394.143
10.782
2411.109
12.613
2424.651
12.856
2442.103
8.336
2451.865
8.111
2461.386
5.996
2467.43
169.32
2636.872
12.118
2649.061
457.682
3107.079
11.182
3118.274
13.341
3141.329
8.398
3153.616
8.447
3164.471
35.912
3200.813
9.656
3223.175
6.007
3234.158
45.449
3283.615
7.223
3291.162
7.022
3309.925
6.496
3318.178
9.499
3329.465
10.647
3340.421
180.292
3521.127
8.567
3529.854
144.267
3676.561
44.719
3742.896
16.064
3762.027
49.763
3815.876
8.252
3824.188
174.708
4001.285
5.642
4008.945
5.626
4022.349
95.336
4123.747
84.404
4210.596
17.902
4241.963
13.25
4270.89
107.818
4385.505
105.7
4493.664
10.622
4522.819
21.012
4543.931
25.302
4580.653
10.406
4597.11
22.695
4619.875
29.517
4649.464
5.355
4656.347
108.561
4772.14
12.367
4788.427
15.722
4804.293
14.026
4857.07
29.027
4887.491
7.363
4903.041
6.594
4915.455
11.253
4926.783
58.928
4986.345
15.25
5003.489
100.266
5103.797
25.031
5139.658
8.797
5169.798
13.414
5188.648
8.86
5295.182
10.157
5371.092
18.138
5389.259
5.012
5408.081
5.038
5427.368
5.831
6720.751
5.069
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data
Script Treemap Data
Provide as required, for treemap app.

Metrics

Cumulative Layout Shift — 0.214
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Other

Defer offscreen images — Potential savings of 197 KiB
Time to Interactive can be slowed down by resources on the page. Coursehero.com should consider lazy-loading offscreen and hidden images.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://www.coursehero.com/assets/img/homepage/blog/36_roommate_questions.jpg
25729
25729
https://cdn.cookielaw.org/logos/265c1602-2645-42a0-9388-484739b10fd3/5817a35c-82a4-4bed-86d6-71b98b9acaed/e3803b9f-280e-45f1-8abc-9ff922c6c05d/CMYK-course-hero-logo.png
25272
25272
https://www.coursehero.com/assets/img/homepage/blog/why_you_procastinate.jpg
22390
22390
https://www.coursehero.com/assets/img/homepage/blog/are_you_in_the_right_major.jpg
21060
21060
https://www.coursehero.com/assets/img/homepage/blog/days_worth_of_fun.jpg
19829
19829
https://www.coursehero.com/assets/img/homepage/tweets/twitter_profile_tso.jpg
18553
18553
https://www.coursehero.com/assets/img/homepage/blog/the_best_way_to_take_notes.jpg
18038
18038
https://www.coursehero.com/assets/img/homepage/blog/how_to_study_a_textbook.jpg
16410
16410
https://www.coursehero.com/assets/img/homepage/blog/practice_tests.jpg
15471
15471
https://www.coursehero.com/assets/img/homepage/subscribe_2019.svg
7235
7235
https://www.coursehero.com/assets/img/homepage/upload_2019.svg
6193
6193
https://www.coursehero.com/assets/img/courses/icons-standardized/Psychology_Blue.svg
3407
3407
https://cdn.cookielaw.org/logos/static/poweredBy_ot_logo.svg
2323
2323
Reduce unused CSS — Potential savings of 160 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Coursehero.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/app.3dac923c12a7c98c4691.css
37242
37149
https://www.coursehero.com/ch-assets/granite/v1/granite.min.css
23920
22778
https://f.vimeocdn.com/p/4.13.5/css/player.css
21157
21157
.orange-btn{background-color:#e00099 !important} ...
21306
19728
#onetrust-banner-sdk{-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%} ...
19424
19116
webpack://./../../../node_modules/@granite/react-components/dist/style.css
19873
18608
.ck-hidden{display:none!important} ...
16289
14580
https://www.coursehero.com/sym-assets/css/1e752e7-6f99a8a.css
13563
10562
Serve images in next-gen formats — Potential savings of 48 KiB
Consider JPEG 2000, JPEG XR or WebP image formats which provide better compression than PNG and JPEG.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://www.coursehero.com/assets/img/homepage/blog/why_you_procastinate.jpg
22390
10780.3
https://www.coursehero.com/assets/img/homepage/blog/are_you_in_the_right_major.jpg
21060
10600.7
https://www.coursehero.com/assets/img/homepage/blog/36_roommate_questions.jpg
25729
9566.05
https://www.coursehero.com/assets/img/homepage/blog/days_worth_of_fun.jpg
19829
9482
https://www.coursehero.com/assets/img/homepage/blog/the_best_way_to_take_notes.jpg
18038
9220.15
Remove duplicate modules in JavaScript bundles — Potential savings of 56 KiB
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Source Transfer Size (Bytes) Potential Savings (Bytes)
run/monolith-build/src/Control/assets/js/vendor/ng/select/select.js
12781
node_modules/react-query
12479
Other
9279
node_modules/downshift
4944
js/src/search/legacy/store/filter-store.ts
3704
js/src/utils/service/amplitude-service.ts
3243
run/monolith-build/src/Control/assets/js/vendor/ng/select/angular-sanitize.js
2407
node_modules/es-abstract
1953
js/src/common/component/school-search.tsx
1738
node_modules/react-granite
1560
node_modules/react-popper
1272
node_modules/react-is
1201
js/src/search/legacy/view/filter/autocomplete-filter.tsx
1134
Avoid serving legacy JavaScript to modern browsers — Potential savings of 47 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
URL Potential Savings (Bytes)
https://assets.coursehero.com/assets/legacy/assetic:ch-editor-tm.23065ada.js
15003
https://apis.google.com/js/platform.js
8826
https://cdn.cookielaw.org/scripttemplates/202210.1.0/otBannerSdk.js
6590
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/chunk.vendors~qa/ask-expert-tutors/app.02fcd82c6e2e7ef05fc7.js
6067
https://cdnjs.cloudflare.com/ajax/libs/rollbar.js/2.13.0/rollbar.min.js
5756
https://www.coursehero.com/sym-assets/js/bundle-67a17ce-2e95563.js
5619
https://assets.coursehero.com/assets/legacy/layout-bundle:masterUnoptimizedHead.ceab7d58.js
101
https://snap.licdn.com/li.lms-analytics/insight.min.js
63
https://cdn.amplitude.com/libs/amplitude-7.1.0-min.gz.js
55
https://f.vimeocdn.com/p/4.13.5/js/vendor.module.js
49
https://www.coursehero.com/sym-assets/js/homepage-app-e7fc531-27eba13.js
44
Avoid enormous network payloads — Total size was 3,552 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://assets.coursehero.com/assets/legacy/layout-bundle:masterUnoptimizedHead.ceab7d58.js
431026
https://assets.coursehero.com/assets/legacy/assetic:ch-editor-tm.23065ada.js
428653
https://www.coursehero.com/sym-assets/js/bundle-67a17ce-2e95563.js
236830
https://www.gstatic.com/recaptcha/releases/jF-AgDWy8ih0GfLx4Semh9UK/recaptcha__en.js
163552
https://f.vimeocdn.com/p/4.13.5/js/vendor.module.js
118414
https://f.vimeocdn.com/p/4.13.5/js/vendor.module.js
118414
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
115140
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
115140
https://www.googletagmanager.com/gtm.js?id=GTM-DK9F
102904
https://cdn.cookielaw.org/scripttemplates/202210.1.0/otBannerSdk.js
94044

Metrics

First Contentful Paint — 6.5 s
The time taken for the first image or text on the page to be rendered.
Time to Interactive — 28.8 s
The time taken for the page to become fully interactive.
Speed Index — 10.1 s
The time taken for the page contents to be visibly populated.
Total Blocking Time — 8,390 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).
Largest Contentful Paint — 8.1 s
The timing of the largest text or image that is painted.

Audits

Max Potential First Input Delay — 2,880 ms
Users could experience a delay when interacting with the page.
First Meaningful Paint — 8.1 s
The time taken for the primary content of the page to be rendered.

Other

Eliminate render-blocking resources — Potential savings of 3,070 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Coursehero.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
URL Transfer Size (Bytes) Potential Savings (Ms)
https://www.coursehero.com/assets/js/compiled/growth/uploader/smartscan-navbar/index.27e22c15586929f1e230.css
1887
150
https://www.coursehero.com/sym-assets/css/1e752e7-6f99a8a.css
13563
150
https://cdn.cookielaw.org/consent/020007b9-7f08-4600-aa15-099b43fd900b/OtAutoBlock.js
2814
780
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js
8030
150
https://assets.coursehero.com/assets/legacy/layout-bundle:masterUnoptimizedHead.ceab7d58.js
431026
2100
Reduce unused JavaScript — Potential savings of 868 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.coursehero.com/sym-assets/js/bundle-67a17ce-2e95563.js
236830
156147
https://www.gstatic.com/recaptcha/releases/jF-AgDWy8ih0GfLx4Semh9UK/recaptcha__en.js
163552
130478
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
115140
71520
https://f.vimeocdn.com/p/4.13.5/js/vendor.module.js
118414
68526
https://connect.facebook.net/en_US/sdk.js?hash=b2a08d5fd39d85ec7301eafba0da1389
89323
66355
https://www.coursehero.com/assets/js/compiled/growth/uploader/smartscan-navbar/chunk.vendors~growth/uploader/smartscan-navbar/index.ae8dea8b9df6fce98e96.js
74080
63960
https://assets.coursehero.com/ssi/vendors.ddbca6c77771b376f9a5.bundle.js
78220
56122
https://cdn.cookielaw.org/scripttemplates/202210.1.0/otBannerSdk.js
94044
54094
https://www.youtube.com/s/player/c4225c42/www-widgetapi.vflset/www-widgetapi.js
54669
45402
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/chunk.vendors~qa/ask-expert-tutors/app.02fcd82c6e2e7ef05fc7.js
60667
37601
https://www.googletagmanager.com/gtm.js?id=GTM-DK9F
102904
36698
https://www.googletagmanager.com/gtag/js?id=G-HR7CRKGJMD
77241
30653
https://www.coursehero.com/sym-assets/js/homepage-app-e7fc531-27eba13.js
41956
25237
https://siteintercept.qualtrics.com/dxjsmodule/CoreModule.js?Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web&Q_BRANDID=coursehero
33230
23974
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/app.c003542512e25696778c.js
53982
22255
Avoid multiple page redirects — Potential savings of 1,110 ms
Redirects can cause additional delays before the page can begin loading. Coursehero.com should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://coursehero.com/
630
https://coursehero.com/
480
https://www.coursehero.com/
0
Serve static assets with an efficient cache policy — 40 resources found
Coursehero.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://bam.nr-data.net/1/404bf9505f?a=136461810,1502219757&v=1216.487a282&to=NVFbZUFUC0RTAEcLXQwbekRAQQpaHQtcD1cSVV5U&rst=4924&ck=1&ref=https://www.coursehero.com/&ap=146&be=441&fe=4858&dc=2715&af=err,xhr,stn,ins,spa&perf=%7B%22timing%22:%7B%22of%22:1668375708020,%22n%22:0,%22f%22:126,%22dn%22:126,%22dne%22:126,%22c%22:126,%22ce%22:126,%22rq%22:126,%22rp%22:399,%22rpe%22:399,%22dl%22:407,%22di%22:2649,%22ds%22:2715,%22de%22:3106,%22dc%22:4857,%22l%22:4857,%22le%22:4879%7D,%22navigation%22:%7B%7D%7D&fp=883&fcp=883&at=GRZMEwlOGBsQAhFYSR9J&jsonp=NREUM.setToken
0
625
https://p.adsymptotic.com/d/px/?_pid=16218&_psign=0aa5badf92527f7732e22463d6fa4dbc&coopa=0&gdpr=0&gdpr_consent=&_puuid=333d4785-eca6-45a3-9c05-86b8215b6568&_expected_cookie=d6a9deebd98a5de893dde22053423721
0
399
https://www.facebook.com/tr?id=1915956025394562&ev=PageView
0
328
https://zn1ttxdo6pi4mebp8-coursehero.siteintercept.qualtrics.com/SIE/?Q_ZID=ZN_1TtxDO6Pi4MeBP8
3600000
3890
https://www.google-analytics.com/analytics.js
7200000
20664
https://js-agent.newrelic.com/nr-spa-1216.min.js
7200000
18912
https://snap.licdn.com/li.lms-analytics/insight.min.js
43863000
4815
https://www.coursehero.com/sym-assets/js/bundle-67a17ce-2e95563.js
86400000
236830
https://cdn.cookielaw.org/scripttemplates/202210.1.0/otBannerSdk.js
86400000
94044
https://www.coursehero.com/assets/js/compiled/growth/uploader/smartscan-navbar/chunk.vendors~growth/uploader/smartscan-navbar/index.ae8dea8b9df6fce98e96.js
86400000
74080
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/chunk.vendors~qa/ask-expert-tutors/app.02fcd82c6e2e7ef05fc7.js
86400000
60667
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/app.c003542512e25696778c.js
86400000
53982
https://www.coursehero.com/sym-assets/js/homepage-app-e7fc531-27eba13.js
86400000
41956
https://cdn.cookielaw.org/logos/265c1602-2645-42a0-9388-484739b10fd3/5817a35c-82a4-4bed-86d6-71b98b9acaed/e3803b9f-280e-45f1-8abc-9ff922c6c05d/CMYK-course-hero-logo.png
86400000
26098
https://www.coursehero.com/assets/js/compiled/qa/widget/chunk.vendors~qa/widget/app.aa3e11c7ba4d0650422e.js
86400000
10516
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js
86400000
8030
https://www.coursehero.com/assets/js/compiled/qa/widget/app.428a8e2eb68f526783c3.js
86400000
7746
https://www.coursehero.com/assets/js/compiled/growth/uploader/smartscan-navbar/index.6281e010d243bbb11c17.js
86400000
4335
https://www.coursehero.com/sym-assets/js/bundle-3593e6a-24cca70.js
86400000
3100
https://cdn.cookielaw.org/consent/020007b9-7f08-4600-aa15-099b43fd900b/OtAutoBlock.js
86400000
2814
https://cdn.cookielaw.org/logos/static/poweredBy_ot_logo.svg
86400000
2323
https://siteintercept.qualtrics.com/dxjsmodule/CoreModule.js?Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web&Q_BRANDID=coursehero
604800000
33230
https://siteintercept.qualtrics.com/dxjsmodule/11.6d6c5ef8794769da04fd.chunk.js?Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web&Q_BRANDID=www.coursehero.com
604800000
19829
https://siteintercept.qualtrics.com/dxjsmodule/1.8ce69394dfc154e65174.chunk.js?Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web&Q_BRANDID=coursehero
604800000
7403
https://siteintercept.qualtrics.com/dxjsmodule/4.a5c0de52a5fc4b1cbc4b.chunk.js?Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web&Q_BRANDID=coursehero
604800000
1576
https://f.vimeocdn.com/p/4.13.5/js/vendor.module.js
1209600000
118414
https://f.vimeocdn.com/p/4.13.5/js/vendor.module.js
1209600000
118414
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
1209600000
115140
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
1209600000
115140
https://f.vimeocdn.com/p/4.13.5/css/player.css
1209600000
21157
https://f.vimeocdn.com/p/4.13.5/css/player.css
1209600000
21157
https://radar.cedexis.com/1621860284/radar.js
1209600000
19149
https://f.vimeocdn.com/p/4.13.5/js/sentry.module.js
1209600000
16642
https://i.vimeocdn.com/video/655474549-6c6bca16afef15643dc0f5fb7746a61eb6db9cfbeae3bdfa0563155636f6c59d-d?q=70
2592000000
44666
https://i.vimeocdn.com/video/656417220-b5e3e12f6b1897aacfb84c25149b89a62ffb853d06c00b7eb4ed8c6ea1a80242-d?q=70
2592000000
19607
https://i.vimeocdn.com/video/655474549-6c6bca16afef15643dc0f5fb7746a61eb6db9cfbeae3bdfa0563155636f6c59d-d.jpg?mw=80&q=85
2592000000
2427
https://i.vimeocdn.com/video/656417220-b5e3e12f6b1897aacfb84c25149b89a62ffb853d06c00b7eb4ed8c6ea1a80242-d.jpg?mw=80&q=85
2592000000
2029
https://f.vimeocdn.com/js_opt/modules/utils/vuid.min.js
2592000000
1408
https://f.vimeocdn.com/js_opt/modules/utils/vuid.min.js
2592000000
1408
https://www.coursehero.com/ch-assets/granite/v1/granite.min.css
2628000000
23920
Avoid an excessive DOM size — 1,968 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
1968
Maximum DOM Depth
a > div.hp_course_card_single > figure > div.owl-lazy
18
Maximum Child Elements
Liberty University 584K documents 47K questions Grand Canyon University 529K do…
100
Reduce JavaScript execution time — 12.3 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://www.coursehero.com/
7124.112
3865.564
67.232
https://assets.coursehero.com/assets/legacy/assetic:ch-editor-tm.23065ada.js
2476.272
2270.316
204.008
https://f.vimeocdn.com/p/4.13.5/js/player.module.js
2156.544
1893.82
7.24
Unattributable
1557.596
84.228
0
https://assets.coursehero.com/assets/legacy/layout-bundle:masterUnoptimizedHead.ceab7d58.js
820.804
696.56
119.436
https://cdn.amplitude.com/libs/amplitude-7.1.0-min.gz.js
704.76
173.004
5.328
https://assets.coursehero.com/ssi/ssiglobalHeaderFragment.bb18dce7418c69b62d5e.bundle.js
677.28
392.94
17.628
https://cdn.cookielaw.org/scripttemplates/202210.1.0/otBannerSdk.js
483.04
266.984
40.288
https://www.coursehero.com/sym-assets/js/bundle-67a17ce-2e95563.js
366.248
295.456
69.252
https://www.googletagmanager.com/gtm.js?id=GTM-DK9F
283.608
230.884
21.988
https://player.vimeo.com/video/233780687
214.864
26.632
13.908
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/app.c003542512e25696778c.js
205.656
192.152
13.504
https://www.google-analytics.com/analytics.js
166.368
152.024
4.328
https://f.vimeocdn.com/p/4.13.5/js/vendor.module.js
153.336
37.256
7.332
https://f.vimeocdn.com/p/4.13.5/js/sentry.module.js
121.252
100.304
7.036
https://www.gstatic.com/recaptcha/releases/jF-AgDWy8ih0GfLx4Semh9UK/recaptcha__en.js
118.068
87.068
30.224
https://www.coursehero.com/Babout-at-I-daressentlesse-a-crue-an-endone-to-N
110.684
70.044
26.84
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/app.3dac923c12a7c98c4691.css
107.056
0
0
https://www.coursehero.com/sym-assets/js/homepage-app-e7fc531-27eba13.js
104.976
86.716
11.756
https://connect.facebook.net/en_US/sdk.js?hash=b2a08d5fd39d85ec7301eafba0da1389
96.468
74.94
20.64
https://player.vimeo.com/video/234000438
94.212
22.348
12.508
https://www.coursehero.com/assets/js/compiled/growth/uploader/smartscan-navbar/index.6281e010d243bbb11c17.js
87.692
86.26
1.432
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js
82.04
68.664
1.768
https://js-agent.newrelic.com/nr-spa-1216.min.js
82.008
69.036
4.436
https://siteintercept.qualtrics.com/dxjsmodule/11.6d6c5ef8794769da04fd.chunk.js?Q_CLIENTVERSION=1.81.0&Q_CLIENTTYPE=web&Q_BRANDID=www.coursehero.com
80.036
64.056
4.6
https://www.googletagmanager.com/gtag/js?id=G-HR7CRKGJMD
75.912
58.324
16.972
https://f.vimeocdn.com/p/4.13.5/css/player.css
63.656
0
0
https://bam.nr-data.net/1/404bf9505f?a=136461810,1502219757&v=1216.487a282&to=NVFbZUFUC0RTAEcLXQwbekRAQQpaHQtcD1cSVV5U&rst=4924&ck=1&ref=https://www.coursehero.com/&ap=146&be=441&fe=4858&dc=2715&af=err,xhr,stn,ins,spa&perf=%7B%22timing%22:%7B%22of%22:1668375708020,%22n%22:0,%22f%22:126,%22dn%22:126,%22dne%22:126,%22c%22:126,%22ce%22:126,%22rq%22:126,%22rp%22:399,%22rpe%22:399,%22dl%22:407,%22di%22:2649,%22ds%22:2715,%22de%22:3106,%22dc%22:4857,%22l%22:4857,%22le%22:4879%7D,%22navigation%22:%7B%7D%7D&fp=883&fcp=883&at=GRZMEwlOGBsQAhFYSR9J&jsonp=NREUM.setToken
57.544
56.52
0.34
https://apis.google.com/js/platform.js
53
46.76
5.524
https://radar.cedexis.com/1/22246/radar.js
52.872
47.444
4.464
Minimize main-thread work — 19.3 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
11778.26
Style & Layout
2388.308
Other
2157.512
Garbage Collection
937.024
Script Parsing & Compilation
855.68
Parse HTML & CSS
794.792
Rendering
400.724
Reduce the impact of third-party code — Third-party code blocked the main thread for 2,500 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
SHOW DETAILS
619145
1613.82
SHOW DETAILS
20441
451.92
SHOW DETAILS
170990
181.352
SHOW DETAILS
180145
129.008
SHOW DETAILS
21283
67.72
SHOW DETAILS
163552
36.06
SHOW DETAILS
92306
17.484
SHOW DETAILS
19943
1.608
SHOW DETAILS
68641
0
SHOW DETAILS
56442
0
SHOW DETAILS
23349
0
SHOW DETAILS
20599
0
SHOW DETAILS
19253
0
SHOW DETAILS
10276
0
SHOW DETAILS
6952
0
SHOW DETAILS
4371
0
SHOW DETAILS
1182
0
SHOW DETAILS
664
0
SHOW DETAILS
575
0
Some third-party resources can be lazy loaded with a facade — 1 facade alternative available
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Product Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
Vimeo Embedded Player (Video)
619145
1613.82
Does not use passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Source
SHOW DETAILS
SHOW DETAILS
Image elements do not have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
URL
https://www.coursehero.com/assets/img/homepage/tweets/twitter_profile_tso.jpg
https://www.coursehero.com/assets/img/homepage/subscribe_2019.svg
https://www.coursehero.com/assets/img/homepage/upload_2019.svg
https://www.coursehero.com/assets/img/qa/homework_landing/expert-tutors.svg
https://www.coursehero.com/assets/img/qa/homework_landing/step-by-step.svg
https://www.coursehero.com/assets/img/qa/homework_landing/fast-answers.svg
https://www.coursehero.com/assets/img/blank.gif
https://www.coursehero.com/assets/img/blank.gif
https://www.coursehero.com/assets/img/blank.gif
https://www.coursehero.com/assets/img/blank.gif
https://www.coursehero.com/assets/img/blank.gif
https://www.coursehero.com/assets/img/blank.gif
https://www.coursehero.com/assets/img/blank.gif
https://www.coursehero.com/assets/img/blank.gif
https://www.coursehero.com/assets/img/blank.gif
Registers an `unload` listener
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.
Source
SHOW DETAILS
First Contentful Paint (3G) — 12900 ms
The time taken for the first image or text on the page to be rendered while on a 3G network.
94

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of coursehero.com. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
`<frame>` or `<iframe>` elements have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
Links have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.
`<object>` elements have alternate text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Coursehero.com may provide assistance to deaf or hearing-impaired users with captions on videos.

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements
@tsolllkurdian
@Jenneigh_
@_racquelpillar
@BlewTgod
@__erinnnnnn
@Dr_Jordan4

Navigation

Heading elements are not in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
Failing Elements
FIN 300
Some elements have a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.
Failing Elements
Find Your Course

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
75

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that coursehero.com should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Ensure CSP is effective against XSS attacks
Significantly reduce the risk of cross-site scripting attacks (XSS) by ensuring you have a strong Content Security Policy (CSP).
Description Directive Severity
script-src directive is missing. This can allow the execution of unsafe scripts.
script-src
High
Missing object-src allows the injection of plugins that execute unsafe scripts. Consider setting object-src to 'none' if you can.
object-src
High

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
jQuery
2.2.4
React
17.0.2
Lo-Dash
4.17.21
LABjs
AngularJS
1.3.20
Moment.js
2.29.1
core-js
core-js-global@3.8.1
No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://coursehero.com/
Allowed
Includes front-end JavaScript libraries with known security vulnerabilities — 20 vulnerabilities detected
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Library Version Vulnerability Count Highest Severity
SHOW DETAILS
4
Medium
SHOW DETAILS
15
High
SHOW DETAILS
1
High

Audits

Uses deprecated APIs — 1 warning found
Avoid deprecated APIs which will eventually be removed the browser.
Deprecation / Warning Source
...
SHOW DETAILS
Missing source maps for large first-party JavaScript
Consider deploying source maps for added benefits such as the ability to debug while in production.
URL Map URL
https://assets.coursehero.com/assets/legacy/layout-bundle:masterUnoptimizedHead.ceab7d58.js
https://assets.coursehero.com/assets/legacy/assetic:ch-editor-tm.23065ada.js
https://www.coursehero.com/sym-assets/js/bundle-67a17ce-2e95563.js
https://www.coursehero.com/sym-assets/js/bundle-67a17ce-2e95563.js.map
https://www.coursehero.com/sym-assets/js/homepage-app-e7fc531-27eba13.js
https://www.coursehero.com/sym-assets/js/homepage-app-e7fc531-27eba13.js.map
https://www.coursehero.com/sym-assets/js/bundle-3593e6a-24cca70.js
https://www.coursehero.com/sym-assets/js/bundle-3593e6a-24cca70.js.map
https://www.coursehero.com/assets/js/compiled/qa/widget/chunk.vendors~qa/widget/app.aa3e11c7ba4d0650422e.js
https://www.coursehero.com/assets/js/compiled/qa/widget/chunk.vendors~qa/widget/app.aa3e11c7ba4d0650422e.js.map
https://www.coursehero.com/assets/js/compiled/qa/widget/app.428a8e2eb68f526783c3.js
https://www.coursehero.com/assets/js/compiled/qa/widget/app.428a8e2eb68f526783c3.js.map
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/chunk.vendors~qa/ask-expert-tutors/app.02fcd82c6e2e7ef05fc7.js
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/chunk.vendors~qa/ask-expert-tutors/app.02fcd82c6e2e7ef05fc7.js.map
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/app.c003542512e25696778c.js
https://www.coursehero.com/assets/js/compiled/qa/ask-expert-tutors/app.c003542512e25696778c.js.map
https://www.coursehero.com/assets/js/compiled/growth/uploader/smartscan-navbar/index.6281e010d243bbb11c17.js
https://www.coursehero.com/assets/js/compiled/growth/uploader/smartscan-navbar/index.6281e010d243bbb11c17.js.map
https://www.coursehero.com/assets/js/compiled/growth/uploader/smartscan-navbar/chunk.vendors~growth/uploader/smartscan-navbar/index.ae8dea8b9df6fce98e96.js
https://www.coursehero.com/assets/js/compiled/growth/uploader/smartscan-navbar/chunk.vendors~growth/uploader/smartscan-navbar/index.ae8dea8b9df6fce98e96.js.map
https://assets.coursehero.com/ssi/vendors.ddbca6c77771b376f9a5.bundle.js
https://assets.coursehero.com/ssi/vendors.ddbca6c77771b376f9a5.bundle.js.map
https://assets.coursehero.com/ssi/ssiGlobalRuntime.2b124abcbc8b00f27310.bundle.js
https://assets.coursehero.com/ssi/ssiGlobalRuntime.2b124abcbc8b00f27310.bundle.js.map
https://assets.coursehero.com/ssi/ssiglobalHeaderFragment.bb18dce7418c69b62d5e.bundle.js
https://assets.coursehero.com/ssi/ssiglobalHeaderFragment.bb18dce7418c69b62d5e.bundle.js.map
86

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for coursehero.com. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of coursehero.com on mobile screens.
Document uses legible font sizes — 100% legible text
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Source Selector % of Page Text Font Size
SHOW DETAILS
100.00%
≥ 12px
Tap targets are sized appropriately — 100% appropriately sized tap targets
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Content Best Practices

Links do not have descriptive text — 1 link found
Make use of descriptive link text to assist search engines in understanding the content.

Crawling and Indexing

Links are not crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
80

PWA

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of coursehero.com. This includes details about web app manifests.

Installable

Web app manifest and service worker meet the installability requirements
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.

PWA Optimized

Configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Sets a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of coursehero.com on mobile screens.
Provides a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Hosting

Server Location

Server IP Address: 104.17.92.47
Continent: North America
Country: United States
United States Flag
Region:
City:
Longitude: -97.822
Latitude: 37.751
Currencies: USD
USN
USS
Languages: English

Web Hosting Provider

Name IP Address
Cloudflare, Inc.
Registration

Domain Registrant

Private Registration: Yes
Name: Registration Private
Organization: Domains By Proxy, LLC
Country: US
City: Tempe
State: Arizona
Post Code: 85284
Email:
Phone: +1.4806242599
Note: Registration information is derived from various sources and may be inaccurate.

Domain Registrar

Name IP Address
GoDaddy.com, LLC 23.13.154.6
Security

Visitor Safety

Mature Content: Not Likely
McAfee WebAdvisor Rating: Safe
WOT Rating:
WOT Trustworthiness: 74/100
WOT Child Safety: 81/100
Note: Safety information is not guaranteed.

SSL/TLS Certificate

Issued To: sni.cloudflaressl.com
Issued By: Cloudflare Inc ECC CA-3
Valid From: 6th May, 2023
Valid To: 5th May, 2024
Subject: CN = sni.cloudflaressl.com
O = Cloudflare, Inc.
L = San Francisco
S = US
Hash: c959965e
Issuer: CN = Cloudflare Inc ECC CA-3
O = Cloudflare, Inc.
S = US
Version: 2
Serial Number: 11626811532220415099716449993057059537
Serial Number (Hex): 08BF3E111F4CB0714E4976BBE48B42D1
Valid From: 6th May, 2024
Valid To: 5th May, 2024
Signature Algorithm (Short Name): ecdsa-with-SHA256
Signature Algorithm (Long Name): ecdsa-with-SHA256
Authority Key Identifier: keyid:A5:CE:37:EA:EB:B0:75:0E:94:67:88:B4:45:FA:D9:24:10:87:96:1F
Extended Key Usage: TLS Web Server Authentication, TLS Web Client Authentication
CRL Distribution Points:
Full Name:
URI:http://crl3.digicert.com/CloudflareIncECCCA-3.crl

Full Name:
URI:http://crl4.digicert.com/CloudflareIncECCCA-3.crl
Certificate Policies: Policy: 2.23.140.1.2.2
CPS: http://www.digicert.com/CPS
Authority Information Access: OCSP - URI:http://ocsp.digicert.com
CA Issuers - URI:http://cacerts.digicert.com/CloudflareIncECCCA-3.crt
SCT List: Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : EE:CD:D0:64:D5:DB:1A:CE:C5:5C:B7:9D:B4:CD:13:A2:
32:87:46:7C:BC:EC:DE:C3:51:48:59:46:71:1F:B5:9B
Timestamp : May 6 01:53:59.671 2023 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:20:2D:1B:85:81:BF:4A:CD:59:61:E1:4B:8E:
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2F:17:4E:93:A1:3A:B4
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 48:B0:E3:6B:DA:A6:47:34:0F:E5:6A:02:FA:9D:30:EB:
1C:52:01:CB:56:DD:2C:81:D9:BB:BF:AB:39:D8:84:73
Timestamp : May 6 01:53:59.702 2023 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:44:02:20:78:7A:31:87:5E:60:DB:7B:A6:CA:D9:35:
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F9:10:8A:41:D6:E2:3D:4B:1E:56:84:A0:FA:FE:FC:B0:
CF:30:71:A7:86:AA
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : DA:B6:BF:6B:3F:B5:B6:22:9F:9B:C2:BB:5C:6B:E8:70:
91:71:6C:BB:51:84:85:34:BD:A4:3D:30:48:D7:FB:AB
Timestamp : May 6 01:53:59.684 2023 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:44:02:20:64:DA:BB:08:00:B9:3F:52:92:6D:F3:A1:
FB:B7:41:C3:99:61:05:A8:21:BB:D0:A1:3F:74:52:2C:
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9E:42:99:62:8E:E9
Key Usage: Digital Signature
Basic Constraints: CA:FALSE
Subject Alternative Name: DNS:*.coursehero.com
DNS:coursehero.com
DNS:sni.cloudflaressl.com
Technical

DNS Lookup

HTTP Response Headers

HTTP-Code: HTTP/1.1 200 OK
Date: 10th May, 2023
Content-Type: text/html
Cache-Control: no-cache, no-store
Server: cloudflare
Connection: keep-alive
X-Iinfo: 14-15836038-0 SNNN RT(1683744115972 822) q(0 -1 -1 14) r(1 -1) B12(14,0,0) U24
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
Set-Cookie: *
CF-Cache-Status: DYNAMIC
CF-RAY: 7c5451b8f8cb8cda-EWR

Whois Lookup

Created: 11th January, 2008
Changed: 12th January, 2023
Expires: 11th January, 2024
Registrar: GoDaddy.com, LLC
Status: clientTransferProhibited
clientUpdateProhibited
clientRenewProhibited
clientDeleteProhibited
Nameservers: ali.ns.cloudflare.com
bob.ns.cloudflare.com
Owner Name: Registration Private
Owner Organization: Domains By Proxy, LLC
Owner Street: DomainsByProxy.com
2155 E Warner Rd
Owner Post Code: 85284
Owner City: Tempe
Owner State: Arizona
Owner Country: US
Owner Phone: +1.4806242599
Owner Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=COURSEHERO.COM
Admin Name: Registration Private
Admin Organization: Domains By Proxy, LLC
Admin Street: DomainsByProxy.com
2155 E Warner Rd
Admin Post Code: 85284
Admin City: Tempe
Admin State: Arizona
Admin Country: US
Admin Phone: +1.4806242599
Admin Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=COURSEHERO.COM
Tech Name: Registration Private
Tech Organization: Domains By Proxy, LLC
Tech Street: DomainsByProxy.com
2155 E Warner Rd
Tech Post Code: 85284
Tech City: Tempe
Tech State: Arizona
Tech Country: US
Tech Phone: +1.4806242599
Tech Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=COURSEHERO.COM
Full Whois: Domain Name: COURSEHERO.COM
Registry Domain ID: 1377409909_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.godaddy.com
Registrar URL: https://www.godaddy.com
Updated Date: 2023-01-12T12:40:19Z
Creation Date: 2008-01-11T17:19:44Z
Registrar Registration Expiration Date: 2024-01-11T17:19:44Z
Registrar: GoDaddy.com, LLC
Registrar IANA ID: 146
Registrar Abuse Contact Email: abuse@godaddy.com
Registrar Abuse Contact Phone: +1.4806242505
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Domain Status: clientRenewProhibited https://icann.org/epp#clientRenewProhibited
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Registry Registrant ID: Not Available From Registry
Registrant Name: Registration Private
Registrant Organization: Domains By Proxy, LLC
Registrant Street: DomainsByProxy.com
Registrant Street: 2155 E Warner Rd
Registrant City: Tempe
Registrant State/Province: Arizona
Registrant Postal Code: 85284
Registrant Country: US
Registrant Phone: +1.4806242599
Registrant Phone Ext:
Registrant Fax: +1.4806242598
Registrant Fax Ext:
Registrant Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=COURSEHERO.COM
Registry Admin ID: Not Available From Registry
Admin Name: Registration Private
Admin Organization: Domains By Proxy, LLC
Admin Street: DomainsByProxy.com
Admin Street: 2155 E Warner Rd
Admin City: Tempe
Admin State/Province: Arizona
Admin Postal Code: 85284
Admin Country: US
Admin Phone: +1.4806242599
Admin Phone Ext:
Admin Fax: +1.4806242598
Admin Fax Ext:
Admin Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=COURSEHERO.COM
Registry Tech ID: Not Available From Registry
Tech Name: Registration Private
Tech Organization: Domains By Proxy, LLC
Tech Street: DomainsByProxy.com
Tech Street: 2155 E Warner Rd
Tech City: Tempe
Tech State/Province: Arizona
Tech Postal Code: 85284
Tech Country: US
Tech Phone: +1.4806242599
Tech Phone Ext:
Tech Fax: +1.4806242598
Tech Fax Ext:
Tech Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=COURSEHERO.COM
Name Server: ALI.NS.CLOUDFLARE.COM
Name Server: BOB.NS.CLOUDFLARE.COM
DNSSEC: unsigned
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
>>> Last update of WHOIS database: 2023-05-10T18:41:57Z <<<
For more information on Whois status codes, please visit https://icann.org/epp

TERMS OF USE: The data contained in this registrar's Whois database, while believed by the
registrar to be reliable, is provided "as is" with no guarantee or warranties regarding its
accuracy. This information is provided for the sole purpose of assisting you in obtaining
information about domain name registration records. Any use of this data for any other purpose
is expressly forbidden without the prior written permission of this registrar. By submitting
an inquiry, you agree to these terms and limitations of warranty. In particular, you agree not
to use this data to allow, enable, or otherwise support the dissemination or collection of this
data, in part or in its entirety, for any purpose, such as transmission by e-mail, telephone,
postal mail, facsimile or other means of mass unsolicited, commercial advertising or solicitations
of any kind, including spam. You further agree not to use this data to enable high volume, automated
or robotic electronic processes designed to collect or compile this data for any purpose, including
mining this data for your own personal or commercial purposes. Failure to comply with these terms
may result in termination of access to the Whois database. These terms may be subject to modification
at any time without notice.
View Raw Whois

Nameservers

Name IP Address
ali.ns.cloudflare.com 172.64.32.59
bob.ns.cloudflare.com 173.245.59.104
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Subdomains

Domain Subdomain
assets.coursehero.com
assets

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