17.9 sec in total
1.4 sec
16.3 sec
224 ms
Visit dev.aliyun.com now to see the best up-to-date Dev Aliyun content for China and also check out these interesting facts you probably never knew about dev.aliyun.com
云原生(Cloud Native)技术帮助企业在公有云、私有云和混合云等新型动态环境中,构建和运行可弹性扩展的应用。云原生的代表技术包括容器、服务网格、微服务、不可变基础设施和声明式API。 在阿里云容器服务ACK 可以帮助您快速构建并高效管理 云原生应用,帮助企业更快交付、降低未知风险、拓展业务边界。
Visit dev.aliyun.comWe analyzed Dev.aliyun.com page load time and found that the first response time was 1.4 sec and then it took 16.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
dev.aliyun.com performance score
name
value
score
weighting
Value16.9 s
0/100
10%
Value32.8 s
0/100
25%
Value41.8 s
0/100
10%
Value7,790 ms
0/100
30%
Value0
100/100
15%
Value35.1 s
0/100
10%
1423 ms
4004 ms
1496 ms
1569 ms
481 ms
Our browser made a total of 46 requests to load all elements on the main page. We found that 7% of them (3 requests) were addressed to the original Dev.aliyun.com, 43% (20 requests) were made to G.alicdn.com and 9% (4 requests) were made to Aliyun.com. The less responsive or slowest element that took the longest time to load (4.6 sec) relates to the external source Aliyun.com.
Page size can be reduced by 659.0 kB (55%)
1.2 MB
545.9 kB
In fact, the total size of Dev.aliyun.com main page is 1.2 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. CSS take 410.9 kB which makes up the majority of the site volume.
Potential reduce by 24.2 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 24.2 kB or 63% of the original size.
Potential reduce by 45.9 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, Dev Aliyun needs image optimization as it can save up to 45.9 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 206.8 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 206.8 kB or 59% of the original size.
Potential reduce by 382.0 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. Dev.aliyun.com needs all CSS files to be minified and compressed as it can save up to 382.0 kB or 93% of the original size.
Number of requests can be reduced by 23 (61%)
38
15
The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dev Aliyun. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
dev.aliyun.com
1423 ms
dev.aliyun.com
4004 ms
search.html
1496 ms
aliyun_assets
1569 ms
load.js
481 ms
search_home.css
473 ms
index.js
1952 ms
aliyun_footer
4584 ms
g.alicdn.com
88 ms
seed-min.js
95 ms
g.alicdn.com
174 ms
g.alicdn.com
133 ms
g.alicdn.com
188 ms
g.alicdn.com
306 ms
menu.html
2786 ms
aplus_v2.js
405 ms
TB17EJ9JXXXXXasapXXXXXXXXXX-2000-480.png
2790 ms
iconfont.woff
112 ms
agp_heat.min.js
2365 ms
c.gif
3288 ms
g.alicdn.com
385 ms
main.css
347 ms
g.alicdn.com
109 ms
footerRegister.js
113 ms
TB1TyDYJXXXXXaEXVXXEDhGGXXX-32-32.png
626 ms
TB1r2PgJVXXXXbWXXXXUGipYVXX-208-230.png
573 ms
TB19f7aJXXXXXXgXpXXEDhGGXXX-32-32.png
592 ms
TB12ldRLFXXXXX8XFXXXXXXXXXX-208-230.png
785 ms
g.alicdn.com
120 ms
g.alicdn.com
411 ms
TB1mvgdJXXXXXbcXFXXUGipYVXX-208-230.png
876 ms
TB1dG7pJXXXXXXCXVXXiC47GVXX-44-44.png
604 ms
TB1qmnOJXXXXXXqapXXEDhGGXXX-32-32.png
543 ms
TB18_.kJXXXXXcOXVXXiC47GVXX-44-44.png
542 ms
g.alicdn.com
574 ms
analytics.js
153 ms
cloud_helper_config.js
77 ms
accountInfo.htm
1716 ms
TB1A2xIJFXXXXXOXpXXDOoBIXXX-220-78.jpg
405 ms
collect
42 ms
collect
192 ms
412 ms
index.js
89 ms
index.js
84 ms
67 ms
app.gif
1516 ms
dev.aliyun.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.
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.
dev.aliyun.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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
dev.aliyun.com 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 Dev.aliyun.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 Dev.aliyun.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.
dev.aliyun.com
Open Graph description is not detected on the main page of Dev Aliyun. 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: