Tools & Wizards About Us
mooc.cn screenshot

Report Summary

  • 56

    Performance

    Renders faster than
    74% of other websites

  • 52

    Accessibility

    Visual factors better than
    that of 21% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

mooc.cn

MOOC中国 - 慕课改变你，你改变世界

Page Load Speed

28.5 sec in total

First Response

1 sec

Resources Loaded

26.6 sec

Page Rendered

901 ms

mooc.cn screenshot

About Website

Click here to check amazing Mooc content for Germany. Otherwise, check out these important facts you probably never knew about mooc.cn

慕课改变你，你改变世界

Visit mooc.cn

Key Findings

We analyzed Mooc.cn page load time and found that the first response time was 1 sec and then it took 27.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there were 2 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

mooc.cn performance score

56

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.6 s

6/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value9.6 s

11/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value5.7 s

68/100

10%

Network Requests Diagram

mooc.cn

1019 ms

www.mooc.cn

2667 ms

style.css

1239 ms

demo.css

1237 ms

flexslider.css

1235 ms

Our browser made a total of 66 requests to load all elements on the main page. We found that 82% of them (54 requests) were addressed to the original Mooc.cn, 8% (5 requests) were made to Mtupian.qiniudn.com and 3% (2 requests) were made to 7nar46.com1.z0.glb.clouddn.com. The less responsive or slowest element that took the longest time to load (19.9 sec) relates to the external source 7nar46.com1.z0.glb.clouddn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 175.7 kB (16%)

Content Size

1.1 MB

After Optimization

892.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Mooc.cn main page is 1.1 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. 25% of websites need less resources to load. Images take 843.0 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 16.9 kB

  • Original 22.0 kB
  • After minification 21.8 kB
  • After compression 5.2 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 16.9 kB or 76% of the original size.

Image Optimization

-1%

Potential reduce by 10.1 kB

  • Original 843.0 kB
  • After minification 832.9 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. Mooc images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 112.3 kB

  • Original 156.8 kB
  • After minification 134.5 kB
  • After compression 44.5 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 112.3 kB or 72% of the original size.

CSS Optimization

-79%

Potential reduce by 36.5 kB

  • Original 46.0 kB
  • After minification 42.7 kB
  • After compression 9.6 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. Mooc.cn needs all CSS files to be minified and compressed as it can save up to 36.5 kB or 79% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (7%)

Requests Now

59

After Optimization

55

  • Images
  • JavaScript
  • CSS

The browser has sent 59 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Mooc. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

mooc.cn

mooc.cn

1019 ms

www.mooc.cn

www.mooc.cn

2667 ms

style.css

style.css

1239 ms

demo.css

demo.css

1237 ms

flexslider.css

flexslider.css

1235 ms

jquery-1.8.2.min.js

jquery-1.8.2.min.js

3112 ms

jquery.flexslider.js

jquery.flexslider.js

2545 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

1168 ms

logo.png

logo.png

296 ms

baiduliyanhong.jpg

baiduliyanhong.jpg

691 ms

coursera-zx.jpg

coursera-zx.jpg

553 ms

jsjcssj.jpg

jsjcssj.jpg

1749 ms

moocdahui2016.gif

moocdahui2016.gif

303 ms

moocyinhemanyou2.gif

moocyinhemanyou2.gif

580 ms

wangyiweizhuanye.gif

wangyiweizhuanye.gif

1012 ms

yxh-180x101.jpg

yxh-180x101.jpg

833 ms

gdswxz-180x101.jpg

gdswxz-180x101.jpg

868 ms

cjjjj-180x101.jpg

cjjjj-180x101.jpg

982 ms

jjtd-180x101.jpg

jjtd-180x101.jpg

1114 ms

fzrcx-180x101.jpg

fzrcx-180x101.jpg

1140 ms

scyx-180x101.jpg

scyx-180x101.jpg

1252 ms

jjxlx-180x101.jpg

jjxlx-180x101.jpg

1340 ms

wyxy-180x101.jpg

wyxy-180x101.jpg

1396 ms

sjkzx-180x101.jpg

sjkzx-180x101.jpg

1417 ms

huobiyinh-180x101.jpg

huobiyinh-180x101.jpg

1466 ms

suanfa2014-180x101.jpg

suanfa2014-180x101.jpg

1528 ms

songwriting-large-180x101.jpg

songwriting-large-180x101.jpg

1618 ms

caiwuqinghua-180x91.jpg

caiwuqinghua-180x91.jpg

1680 ms

luoji-180x101.jpg

luoji-180x101.jpg

1697 ms

gaojishuj-180x101.jpg

gaojishuj-180x101.jpg

1762 ms

qyjcx-180x101.jpg

qyjcx-180x101.jpg

1864 ms

swxx1-180x101.jpg

swxx1-180x101.jpg

1964 ms

yjgl-180x101.jpg

yjgl-180x101.jpg

1962 ms

china1x-180x101.jpg

china1x-180x101.jpg

1984 ms

fjr-180x101.jpg

fjr-180x101.jpg

2429 ms

linux-180x101.jpg

linux-180x101.jpg

2057 ms

sjsj-180x101.jpg

sjsj-180x101.jpg

2142 ms

mxsw-180x101.jpg

mxsw-180x101.jpg

2241 ms

rjcsnj-180x101.jpg

rjcsnj-180x101.jpg

3523 ms

gcbim-180x101.jpg

gcbim-180x101.jpg

2255 ms

gcztcad2zt-180x101.jpg

gcztcad2zt-180x101.jpg

2376 ms

jisuanjiyuanli-180x101.jpg

jisuanjiyuanli-180x101.jpg

2477 ms

xingkongbeijing201602.jpg

xingkongbeijing201602.jpg

19943 ms

2015moocmanyoux.jpg

2015moocmanyoux.jpg

6336 ms

bimgn-180x101.jpg

bimgn-180x101.jpg

2463 ms

2016bottom.jpg

2016bottom.jpg

12179 ms

2015cxyzwmooc1.jpg

2015cxyzwmooc1.jpg

3925 ms

2015yqxjchuany7.jpg

2015yqxjchuany7.jpg

18327 ms

2015bklyxiandaiyiny1.jpg

2015bklyxiandaiyiny1.jpg

6964 ms

2015dzwzmdgjmxmk7.jpg

2015dzwzmdgjmxmk7.jpg

19894 ms

z_stat.php

z_stat.php

1736 ms

coursera_course_logo-180x101.jpg

coursera_course_logo-180x101.jpg

2281 ms

POSA-MOCCA-180x101.jpg

POSA-MOCCA-180x101.jpg

2413 ms

RegressionModels-180x101.jpg

RegressionModels-180x101.jpg

2176 ms

EDataAnal-180x101.jpg

EDataAnal-180x101.jpg

2289 ms

pythondata-180x101.jpg

pythondata-180x101.jpg

2181 ms

hezuohuoban2016.gif

hezuohuoban2016.gif

2037 ms

logo_gray.png

logo_gray.png

2140 ms

mukegaibianni.png

mukegaibianni.png

2028 ms

searchbt2.gif

searchbt2.gif

2076 ms

jjkk-template.png

jjkk-template.png

2009 ms

stat.htm

stat.htm

274 ms

core.php

core.php

813 ms

9.gif

9.gif

2185 ms

app.gif

app.gif

1052 ms

flexslider-icon.woff

flexslider-icon.woff

286 ms

Accessibility Review

mooc.cn accessibility score

52

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

Form elements do not have associated labels

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

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

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

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

mooc.cn best practices score

75

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

mooc.cn 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

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Mooc.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese 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 Mooc.cn 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

mooc.cn

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