Tools & Wizards About Us
chemall.com.cn screenshot

Report Summary

  • 41

    Performance

    Renders faster than
    60% of other websites

  • 59

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

chemall.com.cn

中国石油和化工网

Page Load Speed

53.9 sec in total

First Response

10.6 sec

Resources Loaded

42.7 sec

Page Rendered

531 ms

chemall.com.cn screenshot

About Website

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

石油和化工行业门户网站、行业B2B电商平台，始建于2000年7月。由即时的 国内外化工快讯、市场信息、行业招标、品牌设备选型市场、精细化工品牌市场、化工原料市场、化工英才网等板块组成。

Visit chemall.com.cn

Key Findings

We analyzed Chemall.com.cn page load time and found that the first response time was 10.6 sec and then it took 43.3 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there were 21 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

chemall.com.cn performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.3 s

3/100

10%

LCP (Largest Contentful Paint)

Value7.3 s

5/100

25%

SI (Speed Index)

Value9.8 s

10/100

10%

TBT (Total Blocking Time)

Value430 ms

65/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.1 s

42/100

10%

Network Requests Diagram

chemall.com.cn

10626 ms

chemaindex21312111111.css

12202 ms

jquery-1.7.2.js

19668 ms

tab.min.js

1016 ms

20150722190716.png

13340 ms

Our browser made a total of 52 requests to load all elements on the main page. We found that 87% of them (45 requests) were addressed to the original Chemall.com.cn, 10% (5 requests) were made to Expo.chemall.com.cn and 4% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (20 sec) belongs to the original domain Chemall.com.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 252.5 kB (65%)

Content Size

388.8 kB

After Optimization

136.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Chemall.com.cn main page is 388.8 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. Only 10% of websites need less resources to load. HTML takes 217.4 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 188.3 kB

  • Original 217.4 kB
  • After minification 207.3 kB
  • After compression 29.1 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 188.3 kB or 87% of the original size.

Image Optimization

-10%

Potential reduce by 11.7 kB

  • Original 112.0 kB
  • After minification 100.4 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. Chemall images are well optimized though.

JavaScript Optimization

-59%

Potential reduce by 744 B

  • Original 1.3 kB
  • After minification 1.2 kB
  • After compression 508 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 744 B or 59% of the original size.

CSS Optimization

-89%

Potential reduce by 51.8 kB

  • Original 58.1 kB
  • After minification 48.8 kB
  • After compression 6.3 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. Chemall.com.cn needs all CSS files to be minified and compressed as it can save up to 51.8 kB or 89% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

30

After Optimization

30

  • Images
  • JavaScript
  • CSS

The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chemall. According to our analytics all requests are already optimized.

Network Requests Diagram

chemall.com.cn

chemall.com.cn

10626 ms

chemaindex21312111111.css

chemaindex21312111111.css

12202 ms

jquery-1.7.2.js

jquery-1.7.2.js

19668 ms

tab.min.js

tab.min.js

1016 ms

20150722190716.png

20150722190716.png

13340 ms

index_line.png

index_line.png

845 ms

index-tb1.png

index-tb1.png

1472 ms

index-tb4.png

index-tb4.png

4426 ms

Registration.png

Registration.png

1642 ms

index-cbq.png

index-cbq.png

2843 ms

tmmk1.png

tmmk1.png

19994 ms

cqxl.png

cqxl.png

5071 ms

03.gif

03.gif

4396 ms

05.gif

05.gif

4591 ms

02.gif

02.gif

8087 ms

bjtl.gif

bjtl.gif

6492 ms

04.jpg

04.jpg

6625 ms

wuji.jpg

wuji.jpg

7505 ms

youji.jpg

youji.jpg

16467 ms

jingxi.jpg

jingxi.jpg

9453 ms

20130428152008.jpg

20130428152008.jpg

9098 ms

20130425152828.jpg

20130425152828.jpg

12039 ms

20130407141925.jpg

20130407141925.jpg

19991 ms

20130328140811.jpg

20130328140811.jpg

10763 ms

20130320094513.jpg

20130320094513.jpg

11497 ms

20121128181440.jpg

20121128181440.jpg

19991 ms

20120504113545.jpg

20120504113545.jpg

19992 ms

suliao.jpg

suliao.jpg

19992 ms

xiangjiao.jpg

xiangjiao.jpg

19993 ms

hfny.jpg

hfny.jpg

19993 ms

youp.jpg

youp.jpg

19993 ms

axd.jpg

axd.jpg

19993 ms

20130613221739.jpg

20130613221739.jpg

19994 ms

20130506110244.jpg

20130506110244.jpg

19994 ms

20130419164146.jpg

20130419164146.jpg

19996 ms

20130319170805.jpg

20130319170805.jpg

19995 ms

20130315105942.jpg

20130315105942.jpg

19995 ms

20130315105357.jpg

20130315105357.jpg

19996 ms

hongdun.jpg

hongdun.jpg

19995 ms

20150722191738.gif

20150722191738.gif

8746 ms

20160304161447.gif

20160304161447.gif

8699 ms

20160304161514.gif

20160304161514.gif

19995 ms

20150722192732.gif

20150722192732.gif

19994 ms

indxe-logo.png

indxe-logo.png

19982 ms

selectBG.gif

selectBG.gif

19981 ms

h.js

h.js

2310 ms

index-tb5.png

index-tb5.png

19973 ms

index-tb7.png

index-tb7.png

19343 ms

index-tb6.png

index-tb6.png

19178 ms

hm.gif

hm.gif

337 ms

index-tb10.png

index-tb10.png

18764 ms

my-bg12.png

my-bg12.png

17329 ms

Accessibility Review

chemall.com.cn accessibility score

59

Accessibility Issues

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

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

chemall.com.cn best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

chemall.com.cn SEO score

92

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

    N/A

  • Encoding

    GB2312

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

chemall.com.cn

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