89.3 sec in total
961 ms
87.5 sec
777 ms
Click here to check amazing CSDN content for China. Otherwise, check out these important facts you probably never knew about csdn.net
CSDN是全球知名中文IT技术交流平台,创建于1999年,包含原创博客、精品问答、职业培训、技术论坛、资源下载等产品服务,提供原创、优质、完整内容的专业IT技术开发社区.
Visit csdn.netWe analyzed Csdn.net page load time and found that the first response time was 961 ms and then it took 88.3 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 was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.
csdn.net performance score
name
value
score
weighting
Value3.8 s
26/100
10%
Value4.8 s
30/100
25%
Value22.4 s
0/100
10%
Value450 ms
63/100
30%
Value0
100/100
15%
Value6.5 s
58/100
10%
961 ms
1329 ms
19112 ms
4904 ms
683 ms
Our browser made a total of 139 requests to load all elements on the main page. We found that 6% of them (9 requests) were addressed to the original Csdn.net, 14% (20 requests) were made to Csdnim.qtmojo.com and 12% (17 requests) were made to C.csdnimg.cn. The less responsive or slowest element that took the longest time to load (19.8 sec) relates to the external source Csdnim.qtmojo.com.
Page size can be reduced by 1.9 MB (33%)
5.8 MB
3.9 MB
In fact, the total size of Csdn.net main page is 5.8 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. 55% of websites need less resources to load. Images take 3.9 MB which makes up the majority of the site volume.
Potential reduce by 105.3 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 27.8 kB, which is 22% 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 105.3 kB or 82% of the original size.
Potential reduce by 463.3 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, CSDN needs image optimization as it can save up to 463.3 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 1.1 MB
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 1.1 MB or 75% of the original size.
Potential reduce by 229.2 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. Csdn.net needs all CSS files to be minified and compressed as it can save up to 229.2 kB or 77% of the original size.
Number of requests can be reduced by 58 (43%)
136
78
The browser has sent 136 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CSDN. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 46 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
csdn.net
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csdn.net accessibility score
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
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.
csdn.net 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
csdn.net SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
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
Tap targets are not sized appropriately
ZH
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Csdn.net 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 Csdn.net 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.
csdn.net
Open Graph description is not detected on the main page of CSDN. 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: