Tools & Wizards About Us
course.com screenshot

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 77% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

course.com

Higher Ed eBooks & Digital Learning Solutions - Cengage

Page Load Speed

1.5 sec in total

First Response

117 ms

Resources Loaded

1.1 sec

Page Rendered

313 ms

course.com screenshot

About Website

Visit course.com now to see the best up-to-date Course content for Hong Kong and also check out these interesting facts you probably never knew about course.com

Cengage digital learning solutions, Higher Ed eBooks, courses, resources & services, craft learning experiences to propel students toward a brighter future.

Visit course.com

Key Findings

We analyzed Course.com page load time and found that the first response time was 117 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

course.com performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

31/100

10%

LCP (Largest Contentful Paint)

Value38.3 s

0/100

25%

SI (Speed Index)

Value15.0 s

1/100

10%

TBT (Total Blocking Time)

Value3,840 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.108

87/100

15%

TTI (Time to Interactive)

Value25.9 s

0/100

10%

Network Requests Diagram

highered

117 ms

showresults.do

145 ms

yepnope.1.5.4-min.js

114 ms

ResultsFullWidth.css

29 ms

ResultsFullWidth.js

55 ms

Our browser made a total of 49 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Course.com, 39% (19 requests) were made to Cengage.com and 4% (2 requests) were made to S2138.t.eloqua.com. The less responsive or slowest element that took the longest time to load (152 ms) relates to the external source S2138.t.eloqua.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 401.9 kB (44%)

Content Size

915.7 kB

After Optimization

513.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Course.com main page is 915.7 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 55% of websites need less resources to load. Images take 367.4 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 18.7 kB

  • Original 24.1 kB
  • After minification 17.7 kB
  • After compression 5.4 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 6.4 kB, which is 26% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 18.7 kB or 78% of the original size.

Image Optimization

-2%

Potential reduce by 8.2 kB

  • Original 367.4 kB
  • After minification 359.1 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Course images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 240.4 kB

  • Original 366.2 kB
  • After minification 334.7 kB
  • After compression 125.8 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 240.4 kB or 66% of the original size.

CSS Optimization

-85%

Potential reduce by 134.5 kB

  • Original 158.1 kB
  • After minification 119.9 kB
  • After compression 23.6 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Course.com needs all CSS files to be minified and compressed as it can save up to 134.5 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 29 (64%)

Requests Now

45

After Optimization

16

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 45 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Course. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

highered

highered

117 ms

showresults.do

showresults.do

145 ms

yepnope.1.5.4-min.js

yepnope.1.5.4-min.js

114 ms

ResultsFullWidth.css

ResultsFullWidth.css

29 ms

ResultsFullWidth.js

ResultsFullWidth.js

55 ms

s_code.js

s_code.js

82 ms

conversion.js

conversion.js

18 ms

reset.css

reset.css

30 ms

cengage-header.css

cengage-header.css

76 ms

cengage-footer.css

cengage-footer.css

55 ms

cengage-results.css

cengage-results.css

59 ms

cengage-search.css

cengage-search.css

71 ms

owl.carousel.css

owl.carousel.css

67 ms

video-style.css

video-style.css

68 ms

please-wait-modal.css

please-wait-modal.css

83 ms

search-gale.js

search-gale.js

112 ms

jquery-2.1.4.min.js

jquery-2.1.4.min.js

73 ms

jquery-ui-1.11.4.min.js

jquery-ui-1.11.4.min.js

70 ms

jquery-ui.css

jquery-ui.css

68 ms

loader.js

loader.js

71 ms

jquery.cookie.min.js

jquery.cookie.min.js

69 ms

jwplayer.js

jwplayer.js

69 ms

jquery.cycle.all.min.js

jquery.cycle.all.min.js

72 ms

cengage-logo.svg

cengage-logo.svg

73 ms

IsbnHyphenation.js

IsbnHyphenation.js

70 ms

jquery.typeAhead.js

jquery.typeAhead.js

69 ms

he-superhero-dcs-jan2016.jpg

he-superhero-dcs-jan2016.jpg

74 ms

HE_01-transform.jpg

HE_01-transform.jpg

85 ms

he-story02-mic.jpg

he-story02-mic.jpg

97 ms

he-story03-january.jpg

he-story03-january.jpg

96 ms

he-hero-cec02.jpg

he-hero-cec02.jpg

137 ms

he-vs01-mthumanities.jpg

he-vs01-mthumanities.jpg

81 ms

he-vs02-ppt.jpg

he-vs02-ppt.jpg

93 ms

he-vs03-time.jpg

he-vs03-time.jpg

92 ms

he-mindtap-band02.jpg

he-mindtap-band02.jpg

115 ms

cengageLearning_v3.jpg

cengageLearning_v3.jpg

117 ms

41 ms

elqCfg.min.js

elqCfg.min.js

36 ms

jquery-2.1.4.min.js

jquery-2.1.4.min.js

57 ms

svrGP

svrGP

152 ms

86 ms

jquery-ui-1.11.4.min.js

jquery-ui-1.11.4.min.js

32 ms

jquery-ui.css

jquery-ui.css

29 ms

loader.js

loader.js

38 ms

s28668100254144

s28668100254144

87 ms

search-gale.js

search-gale.js

31 ms

svrGP.aspx

svrGP.aspx

59 ms

jquery.cookie.min.js

jquery.cookie.min.js

27 ms

jwplayer.js

jwplayer.js

32 ms

Accessibility Review

course.com accessibility score

91

Accessibility Issues

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Buttons do not have an accessible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

course.com best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

course.com SEO score

83

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Course.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Course.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

course.com

Open Graph description is not detected on the main page of Course. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: