Tools & Wizards About Us
network.51cto.com screenshot

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

12.3 sec in total

First Response

742 ms

Resources Loaded

10.6 sec

Page Rendered

956 ms

network.51cto.com screenshot

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 742 ms and then it took 11.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

network.51cto.com performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value11.3 s

0/100

10%

LCP (Largest Contentful Paint)

Value11.3 s

0/100

25%

SI (Speed Index)

Value19.5 s

0/100

10%

TBT (Total Blocking Time)

Value690 ms

43/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value19.8 s

2/100

10%

Network Requests Diagram

network.51cto.com

742 ms

network.51cto.com

1075 ms

network

2258 ms

antidomxss_v702.js

251 ms

interfaceacting230515.js

294 ms

Our browser made a total of 143 requests to load all elements on the main page. We found that 1% of them (2 requests) were addressed to the original Network.51cto.com, 28% (40 requests) were made to S5-media.51cto.com and 8% (12 requests) were made to S5.51cto.com. The less responsive or slowest element that took the longest time to load (4 sec) relates to the external source Static1.51ctocdn.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 507.5 kB (11%)

Content Size

4.7 MB

After Optimization

4.2 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Network.51cto.com main page is 4.7 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 3.6 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 201.3 kB

  • Original 253.3 kB
  • After minification 250.9 kB
  • After compression 52.0 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 201.3 kB or 79% of the original size.

Image Optimization

-3%

Potential reduce by 109.7 kB

  • Original 3.6 MB
  • After minification 3.5 MB

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

-23%

Potential reduce by 196.5 kB

  • Original 865.4 kB
  • After minification 859.5 kB
  • After compression 668.9 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 196.5 kB or 23% of the original size.

Requests Breakdown

Number of requests can be reduced by 48 (35%)

Requests Now

138

After Optimization

90

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 138 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 40 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

network.51cto.com

network.51cto.com

742 ms

network.51cto.com

network.51cto.com

1075 ms

network

network

2258 ms

antidomxss_v702.js

antidomxss_v702.js

251 ms

interfaceacting230515.js

interfaceacting230515.js

294 ms

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1604 ms

count.js

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1327 ms

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1414 ms

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1372 ms

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1581 ms

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933 ms

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894 ms

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1024 ms

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666 ms

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791 ms

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813 ms

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795 ms

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814 ms

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912 ms

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956 ms

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986 ms

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952 ms

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914 ms

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957 ms

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1014 ms

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1045 ms

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814 ms

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813 ms

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812 ms

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849 ms

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894 ms

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897 ms

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910 ms

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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

    ZH

  • Encoding

    UTF-8

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 it matches the claimed language. Our system also found out that Network.51cto.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

network.51cto.com

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: