10.1 sec in total
658 ms
8.5 sec
937 ms
Click here to check amazing Virtual 51CTO content for China. Otherwise, check out these important facts you probably never knew about virtual.51cto.com
51CTO-涵盖虚拟化相关研究热点、技术难点与应用场景,为云计算打下坚实的基础。
Visit virtual.51cto.comWe analyzed Virtual.51cto.com page load time and found that the first response time was 658 ms and then it took 9.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.
virtual.51cto.com performance score
name
value
score
weighting
Value10.9 s
0/100
10%
Value11.0 s
0/100
25%
Value18.6 s
0/100
10%
Value530 ms
55/100
30%
Value0
100/100
15%
Value17.8 s
4/100
10%
658 ms
1074 ms
1626 ms
269 ms
311 ms
Our browser made a total of 137 requests to load all elements on the main page. We found that 1% of them (2 requests) were addressed to the original Virtual.51cto.com, 29% (40 requests) were made to S5-media.51cto.com and 7% (10 requests) were made to S6.51cto.com. The less responsive or slowest element that took the longest time to load (2.5 sec) relates to the external source Static1.51ctocdn.cn.
Page size can be reduced by 471.4 kB (12%)
3.8 MB
3.4 MB
In fact, the total size of Virtual.51cto.com main page is 3.8 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. 70% of websites need less resources to load. Images take 2.7 MB which makes up the majority of the site volume.
Potential reduce by 189.5 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 189.5 kB or 80% of the original size.
Potential reduce by 85.4 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. Virtual 51CTO images are well optimized though.
Potential reduce by 196.5 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.
Number of requests can be reduced by 44 (33%)
132
88
The browser has sent 132 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Virtual 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 36 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
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virtual.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.
virtual.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
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
virtual.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
ZH
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Virtual.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 Virtual.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.
virtual.51cto.com
Open Graph description is not detected on the main page of Virtual 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: