54.9 sec in total
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Visit images.51cto.com now to see the best up-to-date Images 51 Cto content for China and also check out these interesting facts you probably never knew about images.51cto.com
51CTO是中国知名的数字化人才学习平台和技术社区,以服务一亿数字化人才职业成长为己任,对中国数千万数字化人才拥有强大的影响力和服务能力。通过技术社区、技术博客和新媒体矩阵等综合产品服务体系,凝聚了2000万+IT技术人员、50万+位技术博主和近千家IT公司的CTO;通过丰富且高质量的IT技术在线教育资源,完整覆盖就业培训、在职提升、认证考试等职业教育领域,分别打造企业培训、个人提升创新产品矩阵,...
Visit images.51cto.comWe analyzed Images.51cto.com page load time and found that the first response time was 8.8 sec and then it took 46.1 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 3 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.
images.51cto.com performance score
name
value
score
weighting
Value2.4 s
72/100
10%
Value4.4 s
39/100
25%
Value7.1 s
31/100
10%
Value160 ms
93/100
30%
Value0.038
100/100
15%
Value4.3 s
84/100
10%
8765 ms
7524 ms
703 ms
1070 ms
6115 ms
Our browser made a total of 139 requests to load all elements on the main page. We found that 22% of them (31 requests) were addressed to the original Images.51cto.com, 10% (14 requests) were made to S1.51cto.com and 6% (9 requests) were made to Bdimg.share.baidu.com. The less responsive or slowest element that took the longest time to load (19.7 sec) relates to the external source S3.51cto.com.
Page size can be reduced by 390.5 kB (23%)
1.7 MB
1.3 MB
In fact, the total size of Images.51cto.com main page is 1.7 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. 30% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.
Potential reduce by 86.1 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. This page needs HTML code to be minified as it can gain 17.1 kB, which is 16% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 86.1 kB or 80% of the original size.
Potential reduce by 165.3 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. Obviously, Images 51 Cto needs image optimization as it can save up to 165.3 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 139.1 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 139.1 kB or 51% of the original size.
Potential reduce by 11 B
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. Images.51cto.com has all CSS files already compressed.
Number of requests can be reduced by 64 (50%)
127
63
The browser has sent 127 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Images 51 Cto. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 47 to 1 for JavaScripts and as a result speed up the page load time.
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images.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.
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
Image elements do not have [alt] attributes
Links do not have a discernible name
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
List items (<li>) are not contained within <ul> or <ol> parent elements.
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.
images.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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
images.51cto.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
ZH
N/A
GB2312
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Images.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 Images.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.
images.51cto.com
Open Graph description is not detected on the main page of Images 51 Cto. 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: