Tools & Wizards About Us
class.cnedu.cn screenshot

Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 72% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 64

    SEO

    Google-friendlier than
    24% of websites

class.cnedu.cn

Welcome to nginx!

Page Load Speed

52.1 sec in total

First Response

5.5 sec

Resources Loaded

46.2 sec

Page Rendered

284 ms

class.cnedu.cn screenshot

About Website

Click here to check amazing Class Cnedu content for China. Otherwise, check out these important facts you probably never knew about class.cnedu.cn

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Visit class.cnedu.cn

Key Findings

We analyzed Class.cnedu.cn page load time and found that the first response time was 5.5 sec and then it took 46.5 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there were 6 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

class.cnedu.cn performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.7 s

100/100

10%

LCP (Largest Contentful Paint)

Value0.7 s

100/100

25%

SI (Speed Index)

Value1.8 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value0.7 s

100/100

10%

Network Requests Diagram

www.cnedu.cn

5547 ms

index-min.css

9797 ms

judgeBrowers.js

2502 ms

jquery-1.4.2.min.js

13091 ms

head_champion_new1000.js

2954 ms

Our browser made a total of 62 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Class.cnedu.cn, 16% (10 requests) were made to Bdimg.share.baidu.com and 3% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (20.5 sec) relates to the external source Cnedu.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 109.5 kB (40%)

Content Size

276.7 kB

After Optimization

167.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Class.cnedu.cn main page is 276.7 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. 15% of websites need less resources to load. Images take 112.9 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 30.6 kB

  • Original 41.3 kB
  • After minification 38.7 kB
  • After compression 10.7 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 30.6 kB or 74% of the original size.

Image Optimization

-15%

Potential reduce by 16.8 kB

  • Original 112.9 kB
  • After minification 96.1 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. Obviously, Class Cnedu needs image optimization as it can save up to 16.8 kB or 15% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-28%

Potential reduce by 19.4 kB

  • Original 69.3 kB
  • After minification 69.3 kB
  • After compression 49.9 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 19.4 kB or 28% of the original size.

CSS Optimization

-80%

Potential reduce by 42.7 kB

  • Original 53.3 kB
  • After minification 52.6 kB
  • After compression 10.6 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. Class.cnedu.cn needs all CSS files to be minified and compressed as it can save up to 42.7 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 19 (37%)

Requests Now

52

After Optimization

33

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Class Cnedu. 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 as a result speed up the page load time.

Network Requests Diagram

www.cnedu.cn

www.cnedu.cn

5547 ms

index-min.css

index-min.css

9797 ms

judgeBrowers.js

judgeBrowers.js

2502 ms

jquery-1.4.2.min.js

jquery-1.4.2.min.js

13091 ms

head_champion_new1000.js

head_champion_new1000.js

2954 ms

idx-caurse-nav.js

idx-caurse-nav.js

4482 ms

c.php

c.php

1525 ms

poster.js

poster.js

4402 ms

visit.js

visit.js

10495 ms

uuid.js

uuid.js

4690 ms

jquery.SuperSlide.js

jquery.SuperSlide.js

4453 ms

zxkf.js

zxkf.js

4901 ms

index2015.js

index2015.js

8298 ms

biaoshi.gif

biaoshi.gif

2308 ms

topEwm.png

topEwm.png

5552 ms

zb-tit.png

zb-tit.png

482 ms

xyxs-icon.png

xyxs-icon.png

445 ms

ewm-kyw.jpg

ewm-kyw.jpg

1326 ms

jgzlg.jpg

jgzlg.jpg

893 ms

itrustcn.gif

itrustcn.gif

892 ms

cnnic.gif

cnnic.gif

893 ms

head_champion_new1000.htm

head_champion_new1000.htm

961 ms

h.js

h.js

721 ms

hm.gif

hm.gif

1398 ms

logo.png

logo.png

8943 ms

sprites.png

sprites.png

3993 ms

_blank

_blank

6 ms

li67a3e2edc0bf4af7b1683107c240ae34.png

li67a3e2edc0bf4af7b1683107c240ae34.png

6974 ms

li906b2583e0e046a39a8e5728b08d4591.jpg

li906b2583e0e046a39a8e5728b08d4591.jpg

4506 ms

li25e68c7d91d9478490d92447b8fad9b9.jpg

li25e68c7d91d9478490d92447b8fad9b9.jpg

19581 ms

re117fab816ff949bc93f4c322a019f315.jpg

re117fab816ff949bc93f4c322a019f315.jpg

19582 ms

419.htm

419.htm

6659 ms

line-align.png

line-align.png

6438 ms

vl-bg.png

vl-bg.png

6913 ms

btm-top-bg.jpg

btm-top-bg.jpg

15257 ms

stat.htm

stat.htm

169 ms

core.php

core.php

3108 ms

1293 ms

top1.gif

top1.gif

20473 ms

top2.jpg

top2.jpg

14911 ms

1.gif

1.gif

13141 ms

2.gif

2.gif

16460 ms

share.js

share.js

1174 ms

verifyLogin.shtm

verifyLogin.shtm

1260 ms

cdelbg.gif

cdelbg.gif

15256 ms

top.gif

top.gif

20371 ms

slide_api.js

slide_api.js

415 ms

slide_view.js

slide_view.js

726 ms

index.php

index.php

1842 ms

tangram.js

tangram.js

2896 ms

api_base.js

api_base.js

598 ms

view_base.js

view_base.js

361 ms

9.gif

9.gif

2084 ms

logger.js

logger.js

360 ms

slide_share.css

slide_share.css

1113 ms

index-min.css

index-min.css

18968 ms

app.gif

app.gif

1852 ms

r0.gif

r0.gif

433 ms

icons_0_16.png

icons_0_16.png

1087 ms

jquery.pack.js

jquery.pack.js

19878 ms

li41e81f48b15f4623bf40566c983b3497.jpg

li41e81f48b15f4623bf40566c983b3497.jpg

19879 ms

rec-dot.png

rec-dot.png

1978 ms

Accessibility Review

class.cnedu.cn accessibility score

89

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

class.cnedu.cn best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

class.cnedu.cn SEO score

64

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Class.cnedu.cn 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 Class.cnedu.cn main page’s claimed encoding is gb2312. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

class.cnedu.cn

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