Tools & Wizards About Us
b2b.21cos.com screenshot

Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 55

    SEO

    Google-friendlier than
    20% of websites

b2b.21cos.com

Page Load Speed

32.2 sec in total

First Response

2.3 sec

Resources Loaded

29.7 sec

Page Rendered

244 ms

b2b.21cos.com screenshot

About Website

Click here to check amazing B 2 21 Cos content for China. Otherwise, check out these important facts you probably never knew about b2b.21cos.com

Visit b2b.21cos.com

Key Findings

We analyzed B2b.21cos.com page load time and found that the first response time was 2.3 sec and then it took 29.9 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 were 3 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

b2b.21cos.com performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.6 s

100/100

10%

LCP (Largest Contentful Paint)

Value0.6 s

100/100

25%

SI (Speed Index)

Value1.1 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value0.6 s

100/100

10%

Network Requests Diagram

b2b.21cos.com

2258 ms

index.asp

13122 ms

css_001.css

20117 ms

jquery.js

6899 ms

ext-all.js

20130 ms

Our browser made a total of 12 requests to load all elements on the main page. We found that all of those requests were addressed to B2b.21cos.com and no external sources were called. The less responsive or slowest element that took the longest time to load (20.1 sec) belongs to the original domain B2b.21cos.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 52.1 kB (78%)

Content Size

66.6 kB

After Optimization

14.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of B2b.21cos.com main page is 66.6 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. CSS take 25.8 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 17.1 kB

  • Original 22.3 kB
  • After minification 21.3 kB
  • After compression 5.1 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. 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 17.1 kB or 77% of the original size.

Image Optimization

-64%

Potential reduce by 1.2 kB

  • Original 1.8 kB
  • After minification 658 B

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, B 2 21 Cos needs image optimization as it can save up to 1.2 kB or 64% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-76%

Potential reduce by 12.7 kB

  • Original 16.6 kB
  • After minification 13.5 kB
  • After compression 3.9 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 12.7 kB or 76% of the original size.

CSS Optimization

-82%

Potential reduce by 21.1 kB

  • Original 25.8 kB
  • After minification 24.8 kB
  • After compression 4.8 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. B2b.21cos.com needs all CSS files to be minified and compressed as it can save up to 21.1 kB or 82% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

7

After Optimization

7

  • Images
  • JavaScript
  • CSS

The browser has sent 7 CSS, Javascripts, AJAX and image requests in order to completely render the main page of B 2 21 Cos. According to our analytics all requests are already optimized.

Network Requests Diagram

b2b.21cos.com

b2b.21cos.com

2258 ms

index.asp

index.asp

13122 ms

css_001.css

css_001.css

20117 ms

jquery.js

jquery.js

6899 ms

ext-all.js

ext-all.js

20130 ms

ContentWindow.js

ContentWindow.js

20130 ms

ext-all.css

ext-all.css

19594 ms

Calendar2013-7-24.js

Calendar2013-7-24.js

7843 ms

logo.gif

logo.gif

6271 ms

weixin.gif

weixin.gif

503 ms

Calendar.gif

Calendar.gif

3142 ms

service.png

service.png

2099 ms

Accessibility Review

b2b.21cos.com accessibility score

68

Accessibility Issues

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

High

Document doesn't have a <title> element

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

b2b.21cos.com best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

b2b.21cos.com SEO score

55

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Document doesn't have a <title> element

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    N/A

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise B2b.21cos.com can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that B2b.21cos.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.

Social Sharing Optimization

b2b.21cos.com

Open Graph description is not detected on the main page of B 2 21 Cos. 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: