Tools & Wizards About Us
2b.cn screenshot

Report Summary

  • 56

    Performance

    Renders faster than
    74% of other websites

  • 55

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

2b.cn

托比网-推进产业互联网化

Page Load Speed

26.5 sec in total

First Response

1.9 sec

Resources Loaded

24.2 sec

Page Rendered

396 ms

2b.cn screenshot

About Website

Welcome to 2b.cn homepage info - get ready to check 2 B best content for China right away, or after learning these important things about 2b.cn

托比网是B2B行业专业的媒体与研究平台，为您提供诚信有实力的B2B企业合作伙伴

Visit 2b.cn

Key Findings

We analyzed 2b.cn page load time and found that the first response time was 1.9 sec and then it took 24.6 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 8 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

2b.cn performance score

56

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value9.8 s

0/100

25%

SI (Speed Index)

Value37.4 s

0/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.9 s

88/100

10%

Network Requests Diagram

2b.cn

1881 ms

jquery-1.4.2.min.js

3038 ms

common.css

1506 ms

loginjs.php

1226 ms

search_news1.js

1253 ms

Our browser made a total of 62 requests to load all elements on the main page. We found that 85% of them (53 requests) were addressed to the original 2b.cn, 3% (2 requests) were made to Api.growingio.com and 2% (1 request) were made to Cdn.bootcss.com. The less responsive or slowest element that took the longest time to load (20 sec) belongs to the original domain 2b.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 237.2 kB (9%)

Content Size

2.5 MB

After Optimization

2.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 2b.cn main page is 2.5 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. 25% of websites need less resources to load. Images take 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 43.7 kB

  • Original 54.0 kB
  • After minification 47.0 kB
  • After compression 10.3 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 7.0 kB, which is 13% 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 43.7 kB or 81% of the original size.

Image Optimization

-5%

Potential reduce by 109.7 kB

  • Original 2.3 MB
  • After minification 2.2 MB

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. 2 B images are well optimized though.

JavaScript Optimization

-51%

Potential reduce by 62.9 kB

  • Original 122.5 kB
  • After minification 118.9 kB
  • After compression 59.6 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 62.9 kB or 51% of the original size.

CSS Optimization

-81%

Potential reduce by 20.9 kB

  • Original 25.8 kB
  • After minification 20.0 kB
  • After compression 4.9 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. 2b.cn needs all CSS files to be minified and compressed as it can save up to 20.9 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (20%)

Requests Now

51

After Optimization

41

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 51 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 2 B. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

2b.cn

2b.cn

1881 ms

jquery-1.4.2.min.js

jquery-1.4.2.min.js

3038 ms

common.css

common.css

1506 ms

loginjs.php

loginjs.php

1226 ms

search_news1.js

search_news1.js

1253 ms

jquery.min.js

jquery.min.js

586 ms

ezmodal.js

ezmodal.js

1108 ms

jquery.pin.js

jquery.pin.js

785 ms

jquery.lazyload.min.js

jquery.lazyload.min.js

948 ms

popwin.js

popwin.js

1153 ms

jquery.luara.0.0.1.min.js

jquery.luara.0.0.1.min.js

1206 ms

vds.js

vds.js

1406 ms

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1771 ms

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1798 ms

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11491 ms

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9792 ms

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3622 ms

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8313 ms

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6808 ms

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3860 ms

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4439 ms

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19958 ms

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13818 ms

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17016 ms

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14895 ms

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19322 ms

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19957 ms

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19957 ms

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19958 ms

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18434 ms

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19958 ms

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19959 ms

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19959 ms

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ico.png

3025 ms

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LOGO300.jpg

1070 ms

logo.png

logo.png

1405 ms

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1384 ms

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1762 ms

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3370 ms

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2484 ms

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4902 ms

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3060 ms

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3688 ms

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19955 ms

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3362 ms

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5585 ms

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5088 ms

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3693 ms

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4064 ms

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4694 ms

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5491 ms

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5962 ms

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11381 ms

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seek_seek.png

5394 ms

default_photo.jpg

default_photo.jpg

5664 ms

stat.php

stat.php

1157 ms

stat.htm

stat.htm

234 ms

core.php

core.php

1546 ms

pv

pv

3180 ms

9.gif

9.gif

793 ms

app.gif

app.gif

687 ms

action

action

836 ms

Accessibility Review

2b.cn accessibility score

55

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

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

High

<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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

2b.cn best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

2b.cn SEO score

85

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

Content Best Practices

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

Impact

Issue

High

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

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 2b.cn 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 2b.cn 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.

Social Sharing Optimization

2b.cn

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