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campus.edx.org screenshot

Report Summary

  • 0

    Performance

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

campus.edx.org

Teach the skills your students need to be job-ready with edX Online Campus

Page Load Speed

14.2 sec in total

First Response

326 ms

Resources Loaded

8.1 sec

Page Rendered

5.7 sec

campus.edx.org screenshot

About Website

Click here to check amazing Campus EdX content for United States. Otherwise, check out these important facts you probably never knew about campus.edx.org

edX Online Campus makes it easy for any university to scale online programs without the investment, while giving students, faculty and staff access to over 3000 courses from the world's leading univer...

Visit campus.edx.org

Key Findings

We analyzed Campus.edx.org page load time and found that the first response time was 326 ms and then it took 13.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

campus.edx.org performance score

0

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.0 s

1/100

10%

LCP (Largest Contentful Paint)

Value75.6 s

0/100

25%

SI (Speed Index)

Value35.3 s

0/100

10%

TBT (Total Blocking Time)

Value76,450 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value1.245

1/100

15%

TTI (Time to Interactive)

Value87.2 s

0/100

10%

Network Requests Diagram

campus.edx.org

326 ms

OtAutoBlock.js

473 ms

otSDKStub.js

839 ms

all.min.css

954 ms

bootstrap.min.css

1014 ms

Our browser made a total of 64 requests to load all elements on the main page. We found that 70% of them (45 requests) were addressed to the original Campus.edx.org, 6% (4 requests) were made to Cdnjs.cloudflare.com and 6% (4 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (3.4 sec) relates to the external source Fonts.gstatic.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 65.5 kB (16%)

Content Size

402.1 kB

After Optimization

336.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Campus.edx.org main page is 402.1 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. 70% of websites need less resources to load. Images take 261.1 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 62.8 kB

  • Original 75.4 kB
  • After minification 66.7 kB
  • After compression 12.6 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 8.7 kB, which is 12% 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 62.8 kB or 83% of the original size.

Image Optimization

-0%

Potential reduce by 99 B

  • Original 261.1 kB
  • After minification 261.0 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. Campus EdX images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 78 B

  • Original 52.0 kB
  • After minification 52.0 kB
  • After compression 52.0 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. This website has mostly compressed JavaScripts.

CSS Optimization

-19%

Potential reduce by 2.6 kB

  • Original 13.5 kB
  • After minification 13.5 kB
  • After compression 10.9 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. Campus.edx.org needs all CSS files to be minified and compressed as it can save up to 2.6 kB or 19% of the original size.

Requests Breakdown

Number of requests can be reduced by 34 (60%)

Requests Now

57

After Optimization

23

  • Images
  • JavaScript
  • CSS

The browser has sent 57 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Campus EdX. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and from 15 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

campus.edx.org

campus.edx.org

326 ms

OtAutoBlock.js

OtAutoBlock.js

473 ms

otSDKStub.js

otSDKStub.js

839 ms

all.min.css

all.min.css

954 ms

bootstrap.min.css

bootstrap.min.css

1014 ms

jquery-1.7.1.js

jquery-1.7.1.js

99 ms

main.min.css

main.min.css

347 ms

resources.min.css

resources.min.css

345 ms

resources-webpage.min.css

resources-webpage.min.css

342 ms

theme-overrides.css

theme-overrides.css

342 ms

css2

css2

968 ms

css2

css2

1404 ms

module_45213296466_Page_Navigation.min.css

module_45213296466_Page_Navigation.min.css

340 ms

module_46474221457_Page_Footer.min.css

module_46474221457_Page_Footer.min.css

394 ms

module_41400653430_Banner_-_Without_Form.min.css

module_41400653430_Banner_-_Without_Form.min.css

775 ms

module_45118579488_Logos_-_Custom_Slider.min.css

module_45118579488_Logos_-_Custom_Slider.min.css

805 ms

module_41622400308_Cards_-_Columns.min.css

module_41622400308_Cards_-_Columns.min.css

805 ms

module_41404311525_Content_and_Images_Rows.min.css

module_41404311525_Content_and_Images_Rows.min.css

774 ms

module_41624048438_Full_Width_-_CTA.min.css

module_41624048438_Full_Width_-_CTA.min.css

805 ms

js

js

998 ms

js

js

1456 ms

js

js

1548 ms

f5a219a3-6dc6-4342-b040-880dd489564b.png

f5a219a3-6dc6-4342-b040-880dd489564b.png

1417 ms

current.js

current.js

783 ms

embed.js

embed.js

981 ms

project.js

project.js

986 ms

jquery-3.5.1.min.js

jquery-3.5.1.min.js

1393 ms

popper.min.js

popper.min.js

954 ms

bootstrap.min.js

bootstrap.min.js

951 ms

main.min.js

main.min.js

965 ms

module_45213296466_Page_Navigation.min.js

module_45213296466_Page_Navigation.min.js

982 ms

project.js

project.js

1350 ms

owl_carousel.min.js

owl_carousel.min.js

954 ms

module_41400653430_Banner_-_Without_Form.min.js

module_41400653430_Banner_-_Without_Form.min.js

1344 ms

module_41404311525_Content_and_Images_Rows.min.js

module_41404311525_Content_and_Images_Rows.min.js

1376 ms

module_41624048438_Full_Width_-_CTA.min.js

module_41624048438_Full_Width_-_CTA.min.js

1376 ms

4982103.js

4982103.js

1333 ms

index.js

index.js

1334 ms

edX%20Navigation%20Logo.svg

edX%20Navigation%20Logo.svg

1411 ms

Rectangle%202.svg

Rectangle%202.svg

1464 ms

Subtract.svg

Subtract.svg

1585 ms

mit_logo_200x101_0-Nov-12-2020-07-05-08-43-PM.png

mit_logo_200x101_0-Nov-12-2020-07-05-08-43-PM.png

1477 ms

harvard-logo.png

harvard-logo.png

1432 ms

3f0d28e5-eeb4-4e0f-9617-39546a3df0c8-1bfe1d50b12f.png

3f0d28e5-eeb4-4e0f-9617-39546a3df0c8-1bfe1d50b12f.png

1440 ms

Boston%20University%20Logo.png

Boston%20University%20Logo.png

1496 ms

University%20System%20of%20Maryland.png

University%20System%20of%20Maryland.png

1526 ms

Australian_National_University-Logo.wine.png

Australian_National_University-Logo.wine.png

1504 ms

curtin-university-200x101-1.png

curtin-university-200x101-1.png

1511 ms

350x130%20logo%20tu%20delft.png

350x130%20logo%20tu%20delft.png

1528 ms

georgetown-university-logo.png

georgetown-university-logo.png

1537 ms

Sorbonne%20University.png

Sorbonne%20University.png

1543 ms

Hong%20Kong.png

Hong%20Kong.png

1307 ms

University%20of%20Adelaide.png

University%20of%20Adelaide.png

1326 ms

UBC-vancouver-1024x427.png

UBC-vancouver-1024x427.png

1332 ms

Queensland%20Logo.png

Queensland%20Logo.png

1896 ms

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuLyfMZs.woff

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuLyfMZs.woff

3403 ms

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuI6fMZs.woff

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuI6fMZs.woff

3403 ms

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuGKYMZs.woff

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuGKYMZs.woff

3417 ms

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuFuYMZs.woff

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuFuYMZs.woff

3416 ms

fa-solid-900.woff

fa-solid-900.woff

534 ms

fa-regular-400.woff

fa-regular-400.woff

3391 ms

Vector%202.svg

Vector%202.svg

3091 ms

Vector%202.svg

Vector%202.svg

56 ms

Vector%202-1.svg

Vector%202-1.svg

28 ms

Accessibility Review

campus.edx.org accessibility score

84

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

campus.edx.org best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

campus.edx.org SEO score

69

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

Document doesn't have a valid hreflang

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 Campus.edx.org 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 Campus.edx.org 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

campus.edx.org

Open Graph data is detected on the main page of Campus EdX. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: