Tools & Wizards About Us
classdo.com screenshot

Report Summary

  • 36

    Performance

    Renders faster than
    56% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 57% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

classdo.com

ClassDo | Learner-centred rooms for participatory & personalised learning

Page Load Speed

5.1 sec in total

First Response

345 ms

Resources Loaded

4.2 sec

Page Rendered

483 ms

classdo.com screenshot

About Website

Click here to check amazing Class Do content for United States. Otherwise, check out these important facts you probably never knew about classdo.com

ClassDo is an award-winning one-stop platform for you to deliver participatory and personalised learning effectively anywhere

Visit classdo.com

Key Findings

We analyzed Classdo.com page load time and found that the first response time was 345 ms and then it took 4.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

classdo.com performance score

36

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value5.0 s

26/100

25%

SI (Speed Index)

Value10.7 s

7/100

10%

TBT (Total Blocking Time)

Value780 ms

38/100

30%

CLS (Cumulative Layout Shift)

Value0.025

100/100

15%

TTI (Time to Interactive)

Value18.9 s

3/100

10%

Network Requests Diagram

classdo.com

345 ms

classdo.com

606 ms

en

151 ms

student

310 ms

application-ce1d6f1dabbf1a5588292bfd71873b909353a2a78a2cc7e5e52fe199893e5eb8.css

732 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 56% of them (25 requests) were addressed to the original Classdo.com, 9% (4 requests) were made to Js.intercomcdn.com and 7% (3 requests) were made to Api.segment.io. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Classdo.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 927.2 kB (56%)

Content Size

1.7 MB

After Optimization

734.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Classdo.com main page is 1.7 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 50% of websites need less resources to load. Javascripts take 640.2 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 205.1 kB

  • Original 261.5 kB
  • After minification 261.1 kB
  • After compression 56.3 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 205.1 kB or 78% of the original size.

Image Optimization

-6%

Potential reduce by 28.5 kB

  • Original 451.7 kB
  • After minification 423.3 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. Class Do images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 435.1 kB

  • Original 640.2 kB
  • After minification 636.3 kB
  • After compression 205.1 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 435.1 kB or 68% of the original size.

CSS Optimization

-84%

Potential reduce by 258.5 kB

  • Original 308.6 kB
  • After minification 307.3 kB
  • After compression 50.1 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. Classdo.com needs all CSS files to be minified and compressed as it can save up to 258.5 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (24%)

Requests Now

34

After Optimization

26

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Class Do. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

classdo.com

classdo.com

345 ms

classdo.com

classdo.com

606 ms

en

en

151 ms

student

student

310 ms

application-ce1d6f1dabbf1a5588292bfd71873b909353a2a78a2cc7e5e52fe199893e5eb8.css

application-ce1d6f1dabbf1a5588292bfd71873b909353a2a78a2cc7e5e52fe199893e5eb8.css

732 ms

application-12496d0fc5a904b86973226e0c64f5d13e391ac0e5c987765be93efb876a8a11.js

application-12496d0fc5a904b86973226e0c64f5d13e391ac0e5c987765be93efb876a8a11.js

1459 ms

analytics.min.js

analytics.min.js

332 ms

logo_header_white-fadbe2e578aa4feaff48fde92cced7bb53204eae30c3ec51c6dbd4e9763e3aa3.png

logo_header_white-fadbe2e578aa4feaff48fde92cced7bb53204eae30c3ec51c6dbd4e9763e3aa3.png

165 ms

ClassDo_student_temptop-3e1f5e8fe9077c8c1645cb89a426042fbb53a8ad5ac3bfb8ddfbf36057578e01.jpg

ClassDo_student_temptop-3e1f5e8fe9077c8c1645cb89a426042fbb53a8ad5ac3bfb8ddfbf36057578e01.jpg

325 ms

ClassDo_student-7b16df2aa917abce391a2a421c18848334793dc1460e0d35b2e35e1c1c7b5834.png

ClassDo_student-7b16df2aa917abce391a2a421c18848334793dc1460e0d35b2e35e1c1c7b5834.png

561 ms

step1both.en-2f8ee5be4acfcafbbd7012a57548cc64a8eeb2c5043861a395a506a11b2d4b2f.jpg

step1both.en-2f8ee5be4acfcafbbd7012a57548cc64a8eeb2c5043861a395a506a11b2d4b2f.jpg

906 ms

step2student.en-1d38c9a07f6eb94e051675a51b4e1f9fb148a1767d485cda0137bb78a738c615.jpg

step2student.en-1d38c9a07f6eb94e051675a51b4e1f9fb148a1767d485cda0137bb78a738c615.jpg

788 ms

step3both.en-1bebd6356e2b135d1375ab8e0a96b63b99fb10db63936ff6e39b8c3d3f967d32.jpg

step3both.en-1bebd6356e2b135d1375ab8e0a96b63b99fb10db63936ff6e39b8c3d3f967d32.jpg

907 ms

step4student.en-b082ddda66951904a6dc89377c6fc2cebe2d074394968545ab716b619853ef6f.jpg

step4student.en-b082ddda66951904a6dc89377c6fc2cebe2d074394968545ab716b619853ef6f.jpg

787 ms

2-5d87288292458e1be736fcc03398877cbc6bbe40566fac7c4bc2471ac2498ea1.jpg

2-5d87288292458e1be736fcc03398877cbc6bbe40566fac7c4bc2471ac2498ea1.jpg

560 ms

3-306b37c003fd6cb5836fe0ab5c1cf914f56161bd3416d35d575ca0f497b1c192.jpg

3-306b37c003fd6cb5836fe0ab5c1cf914f56161bd3416d35d575ca0f497b1c192.jpg

614 ms

4-076123f4a85699d3bca381183b0a24305fb2bf674a84dd9f01220d6dc4e51048.jpg

4-076123f4a85699d3bca381183b0a24305fb2bf674a84dd9f01220d6dc4e51048.jpg

618 ms

1-512b01796aabf514758a4ae5d7777474e8c0c1ec075a4870cb03b44b6cc05bd7.jpg

1-512b01796aabf514758a4ae5d7777474e8c0c1ec075a4870cb03b44b6cc05bd7.jpg

786 ms

classdo_student_promo-ceafbe867d58166e56a72407d01f91a7664eb8deba0f529113ea382b409072a3.jpg

classdo_student_promo-ceafbe867d58166e56a72407d01f91a7664eb8deba0f529113ea382b409072a3.jpg

787 ms

logo_footer-9c21f742e94c81a51da1994817d44d539c90be413c20be56dd2043f37e0d2dae.png

logo_footer-9c21f742e94c81a51da1994817d44d539c90be413c20be56dd2043f37e0d2dae.png

906 ms

Canaro-Light-50c058ecf46deeab7281a1ab4b15c1a207ff9b62b3ec307b40c3cb99348167d4.otf

Canaro-Light-50c058ecf46deeab7281a1ab4b15c1a207ff9b62b3ec307b40c3cb99348167d4.otf

1196 ms

Canaro-Medium-02dc003d66de8d882d3408c3f27377d7ce7062fac823670f785d5c49ebfa1c2b.otf

Canaro-Medium-02dc003d66de8d882d3408c3f27377d7ce7062fac823670f785d5c49ebfa1c2b.otf

1205 ms

Canaro-Bold-ad869fb4841687fbc2a50037cc60e8ee9145ee0ae86efccceb36ebd9e98dce5a.otf

Canaro-Bold-ad869fb4841687fbc2a50037cc60e8ee9145ee0ae86efccceb36ebd9e98dce5a.otf

924 ms

Simple-Line-Icons-f6f562666a73dd0b908ca0a1b522473a5b4f1bc25caa3aa9be09c9f114abdfa2.ttf

Simple-Line-Icons-f6f562666a73dd0b908ca0a1b522473a5b4f1bc25caa3aa9be09c9f114abdfa2.ttf

1047 ms

icomoon-a8fb6570537ffec796b2671bb051149be69a68a237ba755b8e29b04ddff78d28.ttf

icomoon-a8fb6570537ffec796b2671bb051149be69a68a237ba755b8e29b04ddff78d28.ttf

1049 ms

glyphicons-halflings-regular-a26394f7ede100ca118eff2eda08596275a9839b959c226e15439557a5a80742.woff

glyphicons-halflings-regular-a26394f7ede100ca118eff2eda08596275a9839b959c226e15439557a5a80742.woff

1050 ms

i

i

474 ms

p

p

475 ms

t

t

570 ms

amplitude-2.9.0-min.gz.js

amplitude-2.9.0-min.gz.js

56 ms

qbfdb6f9

qbfdb6f9

99 ms

raven.min.js

raven.min.js

98 ms

w.js

w.js

242 ms

api.amplitude.com

api.amplitude.com

508 ms

intercom.ff24bba5.js

intercom.ff24bba5.js

39 ms

echo.515e8809.js

echo.515e8809.js

21 ms

ping

ping

171 ms

213 ms

212 ms

2015-07-12-12-25-02_deco.jpg

2015-07-12-12-25-02_deco.jpg

119 ms

icon-launcher-acquire.8a742481.png

icon-launcher-acquire.8a742481.png

20 ms

client-test

client-test

104 ms

client-test

client-test

89 ms

icon-preview-close.ec1a68fc.png

icon-preview-close.ec1a68fc.png

19 ms

api.amplitude.com

api.amplitude.com

217 ms

Accessibility Review

classdo.com 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

High

<frame> or <iframe> elements do not have a title

High

Links do not have a discernible name

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

High

Heading elements are not in a sequentially-descending order

Best Practices

classdo.com best practices score

83

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

Page has valid source maps

SEO Factors

classdo.com SEO score

100

Search Engine Optimization Advices

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Classdo.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Classdo.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

classdo.com

Open Graph description is not detected on the main page of Class Do. 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: