Tools & Wizards About Us

Report Summary

  • 28

    Performance

    Renders faster than
    48% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

network.51cto.com

网络-51CTO.COM-中国领先的IT技术网站

Page Load Speed

37.6 sec in total

First Response

2.2 sec

Resources Loaded

35 sec

Page Rendered

332 ms

About Website

Welcome to network.51cto.com homepage info - get ready to check Network 51CTO best content for China right away, or after learning these important things about network.51cto.com

51CTO-网络话题集合网络设备、通信技术、网络优化、4G/5G、网络管理、路由交换、布线接入、无线技术等领域的新鲜业界资讯、前沿技术知识、典型应用案例以及产业发展态势。

Visit network.51cto.com

Key Findings

We analyzed Network.51cto.com page load time and found that the first response time was 2.2 sec and then it took 35.3 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 2 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

network.51cto.com performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value16.0 s

0/100

10%

LCP (Largest Contentful Paint)

Value18.6 s

0/100

25%

SI (Speed Index)

Value23.1 s

0/100

10%

TBT (Total Blocking Time)

Value710 ms

42/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value19.7 s

2/100

10%

Network Requests Diagram

network.51cto.com

2213 ms

master.css

6960 ms

art_master_top.css

3627 ms

css.css

3630 ms

allmobilize.min.js

7975 ms

Our browser made a total of 103 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Network.51cto.com, 31% (32 requests) were made to Images.51cto.com and 13% (13 requests) were made to 51cto.com. The less responsive or slowest element that took the longest time to load (20.1 sec) relates to the external source S4.51cto.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 371.9 kB (29%)

Content Size

1.3 MB

After Optimization

895.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Network.51cto.com main page is 1.3 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 823.6 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 60.8 kB

  • Original 80.9 kB
  • After minification 80.2 kB
  • After compression 20.1 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. 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 60.8 kB or 75% of the original size.

Image Optimization

-7%

Potential reduce by 57.6 kB

  • Original 823.6 kB
  • After minification 766.0 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. Network 51CTO images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 235.6 kB

  • Original 341.5 kB
  • After minification 332.1 kB
  • After compression 105.9 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 235.6 kB or 69% of the original size.

CSS Optimization

-84%

Potential reduce by 18.0 kB

  • Original 21.5 kB
  • After minification 20.0 kB
  • After compression 3.5 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. Network.51cto.com needs all CSS files to be minified and compressed as it can save up to 18.0 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 63 (64%)

Requests Now

99

After Optimization

36

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 99 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Network 51CTO. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 35 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

network.51cto.com accessibility score

74

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.

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

network.51cto.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

SEO Factors

network.51cto.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

    ZH

  • Language Claimed

    N/A

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Network.51cto.com 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 Network.51cto.com 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

Open Graph description is not detected on the main page of Network 51CTO. 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: