Tools & Wizards About Us
b2star.com screenshot

Report Summary

  • 48

    Performance

    Renders faster than
    66% of other websites

  • 55

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

b2star.com

生物试剂_化学试剂_化学试剂网_科研试剂采购平台_元素商城

Page Load Speed

13.2 sec in total

First Response

673 ms

Resources Loaded

12 sec

Page Rendered

567 ms

b2star.com screenshot

About Website

Visit b2star.com now to see the best up-to-date B 2 Star content for China and also check out these interesting facts you probably never knew about b2star.com

江苏星科元元素商城官网,提供生物试剂,化学试剂,生化试剂,科研试剂,防护用品,实验室耗材等百万种化工产品的查询与购买,汇集数百家知名品牌供应商,是中国专业的一站式化工产品采购网站。

Visit b2star.com

Key Findings

We analyzed B2star.com page load time and found that the first response time was 673 ms and then it took 12.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

b2star.com performance score

48

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

15/100

10%

LCP (Largest Contentful Paint)

Value12.5 s

0/100

25%

SI (Speed Index)

Value16.2 s

0/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.034

100/100

15%

TTI (Time to Interactive)

Value11.8 s

17/100

10%

Network Requests Diagram

b2star.com

673 ms

www.b2star.com

4110 ms

bootstrap.min.css

217 ms

ace-fonts.css

436 ms

ace.min.css

966 ms

Our browser made a total of 93 requests to load all elements on the main page. We found that 98% of them (91 requests) were addressed to the original B2star.com, 2% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (5.4 sec) belongs to the original domain B2star.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 354.5 kB (11%)

Content Size

3.3 MB

After Optimization

3.0 MB

  • HTML
  • Images

In fact, the total size of B2star.com main page is 3.3 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. 65% of websites need less resources to load. Images take 3.0 MB which makes up the majority of the site volume.

HTML Optimization

-92%

Potential reduce by 271.7 kB

  • Original 294.9 kB
  • After minification 168.2 kB
  • After compression 23.2 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 126.7 kB, which is 43% 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 271.7 kB or 92% of the original size.

Image Optimization

-3%

Potential reduce by 82.8 kB

  • Original 3.0 MB
  • After minification 3.0 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. B 2 Star images are well optimized though.

Requests Breakdown

Number of requests can be reduced by 17 (19%)

Requests Now

91

After Optimization

74

  • Images
  • JavaScript
  • CSS

The browser has sent 91 CSS, Javascripts, AJAX and image requests in order to completely render the main page of B 2 Star. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

b2star.com

b2star.com

673 ms

www.b2star.com

www.b2star.com

4110 ms

bootstrap.min.css

bootstrap.min.css

217 ms

ace-fonts.css

ace-fonts.css

436 ms

ace.min.css

ace.min.css

966 ms

ace-rtl.min.css

ace-rtl.min.css

591 ms

ace-skins.min.css

ace-skins.min.css

609 ms

font-awesome.css

font-awesome.css

613 ms

other-style.css

other-style.css

646 ms

font-awesome.min.css

font-awesome.min.css

686 ms

yake-base.css

yake-base.css

798 ms

b2star-style.css

b2star-style.css

820 ms

smart-search.css

smart-search.css

825 ms

index.umd.js

index.umd.js

872 ms

require.js

require.js

1147 ms

index.css

index.css

1006 ms

css.css

css.css

1031 ms

footer.css

footer.css

1033 ms

inmodelbtn-11.png

inmodelbtn-11.png

224 ms

dialog-close-230526.png

dialog-close-230526.png

212 ms

u650.png

u650.png

213 ms

qiye.png

qiye.png

245 ms

u456.png

u456.png

219 ms

weixin02.jpg

weixin02.jpg

416 ms

rightimg.jpg

rightimg.jpg

617 ms

u36.png

u36.png

422 ms

u1012.png

u1012.png

434 ms

searicon.png

searicon.png

435 ms

shoping02.png

shoping02.png

484 ms

408050

408050

639 ms

408047

408047

635 ms

451811

451811

656 ms

463922

463922

655 ms

D6B4.png

D6B4.png

722 ms

AI.gif

AI.gif

825 ms

u19.png

u19.png

841 ms

1691057308591.jpg

1691057308591.jpg

1439 ms

1709183572589.jpg

1709183572589.jpg

1250 ms

1691323077756.jpg

1691323077756.jpg

1647 ms

1691323145377.jpg

1691323145377.jpg

4269 ms

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1720085198678.jpg

1401 ms

1660030613875.jpg

1660030613875.jpg

1222 ms

1677752641856.jpg

1677752641856.jpg

1982 ms

left.png

left.png

1465 ms

right.png

right.png

1608 ms

1639649379367.jpg

1639649379367.jpg

1638 ms

1661934751966.jpg

1661934751966.jpg

2648 ms

1661934918069.jpg

1661934918069.jpg

2947 ms

1602312374251.jpg

1602312374251.jpg

4031 ms

1711672630037.png

1711672630037.png

1854 ms

1602317596406.jpg

1602317596406.jpg

4041 ms

1677116996633.jpg

1677116996633.jpg

3519 ms

1651914954944.jpg

1651914954944.jpg

2846 ms

built.js

built.js

3041 ms

hm.js

hm.js

1192 ms

1653894148334.jpg

1653894148334.jpg

4668 ms

1651916065734.jpg

1651916065734.jpg

4638 ms

1639649568604.jpg

1639649568604.jpg

3686 ms

1651046180758.jpg

1651046180758.jpg

4062 ms

1651916143900.jpg

1651916143900.jpg

3989 ms

1651916211424.jpg

1651916211424.jpg

5418 ms

1651916324800.jpg

1651916324800.jpg

4012 ms

01.png

01.png

4075 ms

clos.png

clos.png

4052 ms

endone.png

endone.png

4163 ms

endtwo.png

endtwo.png

4076 ms

endtree.png

endtree.png

4109 ms

endfrom.png

endfrom.png

4220 ms

b2tar-wechat.png

b2tar-wechat.png

4243 ms

wx.png

wx.png

4328 ms

b2tar-tiktok.png

b2tar-tiktok.png

4339 ms

dy.png

dy.png

4246 ms

b2tar-ks.png

b2tar-ks.png

4242 ms

ks.png

ks.png

3878 ms

hm.gif

hm.gif

314 ms

b2tar-xhs.png

b2tar-xhs.png

3969 ms

xhs.png

xhs.png

3871 ms

yacoo-wechat.png

yacoo-wechat.png

3845 ms

yacoo-tiktok.png

yacoo-tiktok.png

3823 ms

yacoo-ks.png

yacoo-ks.png

3695 ms

yacoo-xhs.png

yacoo-xhs.png

3818 ms

friendlink03.jpg

friendlink03.jpg

3836 ms

friendlink01.jpg

friendlink01.jpg

3644 ms

friendlink04.jpg

friendlink04.jpg

3513 ms

friendlink05.jpg

friendlink05.jpg

2859 ms

friendlink06.jpg

friendlink06.jpg

2847 ms

AIicon.png

AIicon.png

2747 ms

1-03.png

1-03.png

2598 ms

index.js

index.js

2193 ms

2-03.png

2-03.png

1814 ms

3-03.png

3-03.png

1873 ms

4-03.png

4-03.png

1890 ms

5-03.png

5-03.png

1676 ms

Accessibility Review

b2star.com 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.

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

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

b2star.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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

b2star.com SEO score

85

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

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

    ZH

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise B2star.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 B2star.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.

Social Sharing Optimization

b2star.com

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