Tools & Wizards About Us
thebigdata.cn screenshot

Report Summary

  • 30

    Performance

    Renders faster than
    49% of other websites

  • 63

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 71

    SEO

    Google-friendlier than
    30% of websites

thebigdata.cn

大数据世界--大数据门户网站，大数据资料和交流中心

Page Load Speed

6.4 sec in total

First Response

798 ms

Resources Loaded

5.4 sec

Page Rendered

274 ms

thebigdata.cn screenshot

About Website

Click here to check amazing Thebigdata content for China. Otherwise, check out these important facts you probably never knew about thebigdata.cn

大数据世界 | 提供大数据技术，大数据应用案例，汇聚大数据资料，讨论大数据话题。中国大数据是国内较早的公益性大数据网站，由刘鹏教授创办。

Visit thebigdata.cn

Key Findings

We analyzed Thebigdata.cn page load time and found that the first response time was 798 ms and then it took 5.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

thebigdata.cn performance score

30

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

9/100

10%

LCP (Largest Contentful Paint)

Value6.8 s

7/100

25%

SI (Speed Index)

Value9.1 s

14/100

10%

TBT (Total Blocking Time)

Value1,340 ms

17/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value6.5 s

58/100

10%

Network Requests Diagram

thebigdata.cn

798 ms

www.thebigdata.cn

1211 ms

style.css

673 ms

jquery.js

1135 ms

iwms.js

965 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 89% of them (33 requests) were addressed to the original Thebigdata.cn, 8% (3 requests) were made to Hm.baidu.com and 3% (1 request) were made to Ftpedu.cstor.cn. The less responsive or slowest element that took the longest time to load (2.2 sec) relates to the external source Ftpedu.cstor.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 69.9 kB (10%)

Content Size

680.4 kB

After Optimization

610.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Thebigdata.cn main page is 680.4 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. 30% of websites need less resources to load. Images take 573.9 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 37.5 kB

  • Original 47.8 kB
  • After minification 46.2 kB
  • After compression 10.3 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 37.5 kB or 78% of the original size.

Image Optimization

-5%

Potential reduce by 30.8 kB

  • Original 573.9 kB
  • After minification 543.0 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. Thebigdata images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 370 B

  • Original 52.4 kB
  • After minification 52.4 kB
  • After compression 52.1 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. This website has mostly compressed JavaScripts.

CSS Optimization

-18%

Potential reduce by 1.2 kB

  • Original 6.3 kB
  • After minification 6.3 kB
  • After compression 5.1 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. Thebigdata.cn needs all CSS files to be minified and compressed as it can save up to 1.2 kB or 18% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (9%)

Requests Now

34

After Optimization

31

  • Images
  • JavaScript
  • CSS

The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Thebigdata. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

thebigdata.cn

thebigdata.cn

798 ms

www.thebigdata.cn

www.thebigdata.cn

1211 ms

style.css

style.css

673 ms

jquery.js

jquery.js

1135 ms

iwms.js

iwms.js

965 ms

language.js

language.js

745 ms

18101511221818.png

18101511221818.png

501 ms

b.gif

b.gif

499 ms

2307071953970810t.jpg

2307071953970810t.jpg

500 ms

230113114492731t.jpg

230113114492731t.jpg

504 ms

221202110669321t.jpg

221202110669321t.jpg

499 ms

221202102969003t.jpg

221202102969003t.jpg

501 ms

221202101917561t.jpg

221202101917561t.jpg

501 ms

220823180548919t.jpg

220823180548919t.jpg

1009 ms

220823175868361t.jpg

220823175868361t.jpg

1007 ms

220816151942761t.jpg

220816151942761t.jpg

502 ms

2208161515890810t.jpg

2208161515890810t.jpg

1009 ms

220808174878292t.jpg

220808174878292t.jpg

1005 ms

220808174770571t.jpg

220808174770571t.jpg

1006 ms

220808174663531t.jpg

220808174663531t.jpg

1007 ms

hm.js

hm.js

1003 ms

bg.gif

bg.gif

1007 ms

iwms.gif

iwms.gif

1006 ms

b93aaa39ad369349.jpg

b93aaa39ad369349.jpg

2179 ms

hm.js

hm.js

1012 ms

20061116508889.jpg

20061116508889.jpg

513 ms

pic.gif

pic.gif

503 ms

2307270948497510t.jpg

2307270948497510t.jpg

492 ms

20061116513192.jpg

20061116513192.jpg

735 ms

inputBorder.gif

inputBorder.gif

228 ms

btnBg.gif

btnBg.gif

246 ms

deeprack1.jpg

deeprack1.jpg

498 ms

deeprack2.jpg

deeprack2.jpg

231 ms

bdracka.jpg

bdracka.jpg

709 ms

bdrackb.jpg

bdrackb.jpg

676 ms

digg.gif

digg.gif

461 ms

hm.gif

hm.gif

348 ms

Accessibility Review

thebigdata.cn accessibility score

63

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.

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

thebigdata.cn best practices score

58

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

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

SEO Factors

thebigdata.cn SEO score

71

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

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    ZH

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Thebigdata.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it matches the claimed language. Our system also found out that Thebigdata.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

thebigdata.cn

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