65.9 sec in total
15.5 sec
48.5 sec
1.9 sec
Welcome to os.51cto.com homepage info - get ready to check Os 51CTO best content for China right away, or after learning these important things about os.51cto.com
51CTO-系统话题为个人用户和系统管理员提供技术指导与应用实践,内容包括个人级和企业级Windows、Linux、HarmonyOS、MacOS以及其他系统的新鲜资讯,和系统管理相关的技术文章,并对下一代系统平台进行前瞻性的探讨。
Visit os.51cto.comWe analyzed Os.51cto.com page load time and found that the first response time was 15.5 sec and then it took 50.4 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 5 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.
os.51cto.com performance score
name
value
score
weighting
Value16.7 s
0/100
10%
Value19.3 s
0/100
25%
Value22.4 s
0/100
10%
Value550 ms
54/100
30%
Value0
100/100
15%
Value19.6 s
2/100
10%
15545 ms
1749 ms
5024 ms
1759 ms
20277 ms
Our browser made a total of 106 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Os.51cto.com, 26% (28 requests) were made to Images.51cto.com and 11% (12 requests) were made to 51cto.com. The less responsive or slowest element that took the longest time to load (20.3 sec) relates to the external source A.yunshipei.com.
Page size can be reduced by 293.7 kB (27%)
1.1 MB
790.5 kB
In fact, the total size of Os.51cto.com 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 749.2 kB which makes up the majority of the site volume.
Potential reduce by 51.1 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 51.1 kB or 77% of the original size.
Potential reduce by 73.3 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. Os 51CTO images are well optimized though.
Potential reduce by 156.2 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 156.2 kB or 62% of the original size.
Potential reduce by 13.1 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. Os.51cto.com needs all CSS files to be minified and compressed as it can save up to 13.1 kB or 80% of the original size.
Number of requests can be reduced by 50 (61%)
82
32
The browser has sent 82 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Os 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 27 to 1 for JavaScripts and as a result speed up the page load time.
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os.51cto.com accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
os.51cto.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
os.51cto.com SEO score
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
Document uses legible font sizes
ZH
N/A
GB2312
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Os.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 Os.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.
os.51cto.com
Open Graph description is not detected on the main page of Os 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: