Tools & Wizards About Us
linux521.com screenshot

Report Summary

  • 99

    Performance

    Renders faster than
    96% of other websites

  • 58

    Accessibility

    Visual factors better than
    that of 25% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

linux521.com

Новый сайт успешно создан и готов к работе

Page Load Speed

5.3 sec in total

First Response

1.5 sec

Resources Loaded

3.6 sec

Page Rendered

149 ms

linux521.com screenshot

About Website

Welcome to linux521.com homepage info - get ready to check Linux 521 best content for China right away, or after learning these important things about linux521.com

Linux操作系统教程、命令、安装。www.Linux521.com

Visit linux521.com

Key Findings

We analyzed Linux521.com page load time and found that the first response time was 1.5 sec and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

linux521.com performance score

99

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.6 s

94/100

10%

LCP (Largest Contentful Paint)

Value1.6 s

99/100

25%

SI (Speed Index)

Value1.7 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.032

100/100

15%

TTI (Time to Interactive)

Value1.6 s

100/100

10%

Network Requests Diagram

linux521.com

1539 ms

style.css

149 ms

Default.js

137 ms

ViewClick

139 ms

ViewClick

140 ms

Our browser made a total of 25 requests to load all elements on the main page. We found that 96% of them (24 requests) were addressed to the original Linux521.com, 4% (1 request) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Linux521.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 50.0 kB (65%)

Content Size

76.7 kB

After Optimization

26.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Linux521.com main page is 76.7 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. HTML takes 30.7 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 24.5 kB

  • Original 30.7 kB
  • After minification 28.4 kB
  • After compression 6.2 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 24.5 kB or 80% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 15.1 kB
  • After minification 15.1 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. Linux 521 images are well optimized though.

JavaScript Optimization

-80%

Potential reduce by 7.2 kB

  • Original 9.0 kB
  • After minification 4.9 kB
  • After compression 1.8 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 7.2 kB or 80% of the original size.

CSS Optimization

-84%

Potential reduce by 18.4 kB

  • Original 22.0 kB
  • After minification 17.8 kB
  • After compression 3.6 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. Linux521.com needs all CSS files to be minified and compressed as it can save up to 18.4 kB or 84% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

13

After Optimization

13

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 13 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Linux 521. According to our analytics all requests are already optimized.

Network Requests Diagram

linux521.com

linux521.com

1539 ms

style.css

style.css

149 ms

Default.js

Default.js

137 ms

ViewClick

ViewClick

139 ms

ViewClick

ViewClick

140 ms

ViewClick

ViewClick

143 ms

ViewClick

ViewClick

144 ms

ViewClick

ViewClick

291 ms

ViewClick

ViewClick

291 ms

ViewClick

ViewClick

291 ms

ViewClick

ViewClick

292 ms

159 ms

157 ms

253 ms

256 ms

logo.gif

logo.gif

245 ms

imgad.gif

imgad.gif

242 ms

menu_bg.jpg

menu_bg.jpg

250 ms

ico_3.gif

ico_3.gif

251 ms

menu_bg2.jpg

menu_bg2.jpg

369 ms

241 ms

252 ms

255 ms

258 ms

hm.js

hm.js

1499 ms

Accessibility Review

linux521.com accessibility score

58

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.

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

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

linux521.com 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

linux521.com SEO score

83

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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

    RU

  • Language Claimed

    N/A

  • Encoding

    GBK

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Linux521.com can be misinterpreted by Google and other search engines. Our service has detected that Russian 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 Linux521.com main page’s claimed encoding is gbk. 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

linux521.com

Open Graph description is not detected on the main page of Linux 521. 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: