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class.101.com screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    41% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

class.101.com

Edmodo Classroom | Ingenious Teaching Tools.Immersive Classroom Experiences.

Page Load Speed

5.5 sec in total

First Response

752 ms

Resources Loaded

4.4 sec

Page Rendered

313 ms

class.101.com screenshot

About Website

Visit class.101.com now to see the best up-to-date Class 101 content for China and also check out these interesting facts you probably never knew about class.101.com

Edmodo Classroom is a lesson plan creation tool with built-in subject tools and interactive exercises.

Visit class.101.com

Key Findings

We analyzed Class.101.com page load time and found that the first response time was 752 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

class.101.com performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

27/100

10%

LCP (Largest Contentful Paint)

Value13.7 s

0/100

25%

SI (Speed Index)

Value6.7 s

36/100

10%

TBT (Total Blocking Time)

Value2,800 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value13.2 s

12/100

10%

Network Requests Diagram

class.101.com

752 ms

class.101.com

917 ms

pc.css

235 ms

js

120 ms

modernizr.custom.js

153 ms

Our browser made a total of 42 requests to load all elements on the main page. We found that 10% of them (4 requests) were addressed to the original Class.101.com, 64% (27 requests) were made to Gcdncs.101.com and 10% (4 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.9 sec) relates to the external source Gcdncs.101.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 58.9 kB (13%)

Content Size

451.4 kB

After Optimization

392.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Class.101.com main page is 451.4 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. 40% of websites need less resources to load. Images take 271.4 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 36.0 kB

  • Original 44.1 kB
  • After minification 33.0 kB
  • After compression 8.1 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 11.1 kB, which is 25% 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 36.0 kB or 82% of the original size.

Image Optimization

-4%

Potential reduce by 11.8 kB

  • Original 271.4 kB
  • After minification 259.6 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 101 images are well optimized though.

JavaScript Optimization

-7%

Potential reduce by 7.5 kB

  • Original 116.0 kB
  • After minification 116.0 kB
  • After compression 108.5 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

-18%

Potential reduce by 3.6 kB

  • Original 19.9 kB
  • After minification 19.9 kB
  • After compression 16.3 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. Class.101.com needs all CSS files to be minified and compressed as it can save up to 3.6 kB or 18% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (33%)

Requests Now

39

After Optimization

26

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Class 101. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

class.101.com

class.101.com

752 ms

class.101.com

class.101.com

917 ms

pc.css

pc.css

235 ms

js

js

120 ms

modernizr.custom.js

modernizr.custom.js

153 ms

jquery.min.js

jquery.min.js

159 ms

validate.min.js

validate.min.js

174 ms

ucManager.min.v0.11.js

ucManager.min.v0.11.js

171 ms

fingerprint2.min.js

fingerprint2.min.js

1312 ms

template-web.js

template-web.js

162 ms

common.js

common.js

472 ms

js

js

115 ms

idangerous.swiper2.7.6.min.js

idangerous.swiper2.7.6.min.js

159 ms

gtm.js

gtm.js

106 ms

gtm.js

gtm.js

90 ms

edmodoclassroom_logoM.png

edmodoclassroom_logoM.png

32 ms

home-s1-shadown.png

home-s1-shadown.png

1155 ms

home-s1-bg.jpg

home-s1-bg.jpg

114 ms

icon2.png

icon2.png

96 ms

code.png

code.png

94 ms

icon-spr.png

icon-spr.png

77 ms

home-s3-2.png

home-s3-2.png

25 ms

home-s1-2.png

home-s1-2.png

96 ms

home-s1-3.png

home-s1-3.png

1427 ms

ball3.png

ball3.png

1448 ms

LOGO.png

LOGO.png

1882 ms

successTip.png

successTip.png

170 ms

home-s3-1.png

home-s3-1.png

113 ms

home-s4-bg.png

home-s4-bg.png

1356 ms

home-s4-3.png

home-s4-3.png

180 ms

home-s4-1.png

home-s4-1.png

189 ms

home-s4-2.png

home-s4-2.png

202 ms

home-s7-caidai.png

home-s7-caidai.png

1329 ms

home-s7-envelope-1.png

home-s7-envelope-1.png

1171 ms

icon-spr-foot.png

icon-spr-foot.png

1258 ms

support1.png

support1.png

1336 ms

getComponenets

getComponenets

1291 ms

159 ms

search.jsp

search.jsp

1139 ms

fbevents.js

fbevents.js

36 ms

hm.js

hm.js

1064 ms

hm.gif

hm.gif

319 ms

Accessibility Review

class.101.com accessibility score

75

Accessibility Issues

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

Heading elements are not in a sequentially-descending order

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

class.101.com 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

class.101.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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Class.101.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 Class.101.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

class.101.com

Open Graph description is not detected on the main page of Class 101. 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: