10.2 sec in total
1 sec
8.5 sec
646 ms
Visit developer.alibabacloud.com now to see the best up-to-date Developer Alibaba Cloud content for China and also check out these interesting facts you probably never knew about developer.alibabacloud.com
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Visit developer.alibabacloud.comWe analyzed Developer.alibabacloud.com page load time and found that the first response time was 1 sec and then it took 9.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.
developer.alibabacloud.com performance score
name
value
score
weighting
Value6.2 s
3/100
10%
Value16.0 s
0/100
25%
Value18.0 s
0/100
10%
Value3,360 ms
2/100
30%
Value1.539
0/100
15%
Value25.4 s
0/100
10%
1042 ms
971 ms
940 ms
436 ms
592 ms
Our browser made a total of 120 requests to load all elements on the main page. We found that 2% of them (2 requests) were addressed to the original Developer.alibabacloud.com, 26% (31 requests) were made to Img.alicdn.com and 17% (20 requests) were made to G.alicdn.com. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Fourier.taobao.com.
Page size can be reduced by 1.1 MB (33%)
3.2 MB
2.1 MB
In fact, the total size of Developer.alibabacloud.com main page is 3.2 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. 60% of websites need less resources to load. Javascripts take 1.2 MB which makes up the majority of the site volume.
Potential reduce by 780.2 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. This page needs HTML code to be minified as it can gain 154.3 kB, which is 17% 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 780.2 kB or 85% of the original size.
Potential reduce by 2.3 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. Developer Alibaba Cloud images are well optimized though.
Potential reduce by 259.0 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 259.0 kB or 22% of the original size.
Potential reduce by 21.7 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. Developer.alibabacloud.com needs all CSS files to be minified and compressed as it can save up to 21.7 kB or 17% of the original size.
Number of requests can be reduced by 69 (64%)
108
39
The browser has sent 108 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Developer Alibaba Cloud. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 41 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.
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developer.alibabacloud.com accessibility score
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
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
developer.alibabacloud.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
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
Issues were logged in the Issues panel in Chrome Devtools
developer.alibabacloud.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Image elements do not have [alt] attributes
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Developer.alibabacloud.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Developer.alibabacloud.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.
developer.alibabacloud.com
Open Graph data is detected on the main page of Developer Alibaba Cloud. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: