13.3 sec in total
708 ms
12.2 sec
449 ms
Welcome to bbs.21ic.com homepage info - get ready to check Bbs 21 Ic best content for China right away, or after learning these important things about bbs.21ic.com
21ic电子技术论坛2000年成立,数百万电子工程师及行业大牛无私分享电路设计、电子开发设计经验并在线答疑,每日数千发帖,人气火爆!涵盖单片机论坛,嵌入式论坛,电源论坛,电子设计论坛,ARM论坛,DSP论坛,模拟论坛,通信工控,电测仪表等热门技术版块。
Visit bbs.21ic.comWe analyzed Bbs.21ic.com page load time and found that the first response time was 708 ms and then it took 12.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
bbs.21ic.com performance score
name
value
score
weighting
Value4.9 s
11/100
10%
Value4.9 s
29/100
25%
Value11.3 s
5/100
10%
Value330 ms
75/100
30%
Value0.058
98/100
15%
Value9.4 s
31/100
10%
708 ms
1831 ms
450 ms
908 ms
677 ms
Our browser made a total of 196 requests to load all elements on the main page. We found that 35% of them (68 requests) were addressed to the original Bbs.21ic.com, 11% (21 requests) were made to Ssp.21ic.com and 11% (21 requests) were made to Pos.baidu.com. The less responsive or slowest element that took the longest time to load (3 sec) relates to the external source Img.21ic.com.
Page size can be reduced by 210.3 kB (14%)
1.5 MB
1.3 MB
In fact, the total size of Bbs.21ic.com main page is 1.5 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 1.2 MB which makes up the majority of the site volume.
Potential reduce by 163.9 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 48.7 kB, which is 25% 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 163.9 kB or 83% of the original size.
Potential reduce by 35.2 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. Bbs 21 Ic images are well optimized though.
Potential reduce by 839 B
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. This website has mostly compressed JavaScripts.
Potential reduce by 10.4 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. Bbs.21ic.com needs all CSS files to be minified and compressed as it can save up to 10.4 kB or 23% of the original size.
Number of requests can be reduced by 67 (35%)
194
127
The browser has sent 194 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bbs 21 Ic. 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 4 to 1 for CSS and as a result speed up the page load time.
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bbs.21ic.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
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Links do not have a discernible name
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
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
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
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.
bbs.21ic.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
bbs.21ic.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Page is blocked from indexing
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
ZH
ZH
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Bbs.21ic.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 Bbs.21ic.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.
bbs.21ic.com
Open Graph description is not detected on the main page of Bbs 21 Ic. 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: