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pu.chemnet.com screenshot

Report Summary

  • 77

    Performance

    Renders faster than
    84% of other websites

  • 53

    Accessibility

    Visual factors better than
    that of 22% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

pu.chemnet.com

Global Chemical Network - Chemicals Trading Platform for Chemical Suppliers and Chemical Buyers - ChemNet

Page Load Speed

6.4 sec in total

First Response

1.6 sec

Resources Loaded

4.6 sec

Page Rendered

174 ms

pu.chemnet.com screenshot

About Website

Welcome to pu.chemnet.com homepage info - get ready to check Pu Chem Net best content for China right away, or after learning these important things about pu.chemnet.com

ChemNet is the Chemical Trading platform to connect chemical buyers and chemical sellers with Chemical Search Engine of Chemical Suppliers and Chemical Products.

Visit pu.chemnet.com

Key Findings

We analyzed Pu.chemnet.com page load time and found that the first response time was 1.6 sec and then it took 4.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

pu.chemnet.com performance score

77

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

92/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

36/100

25%

SI (Speed Index)

Value5.2 s

60/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.068

96/100

15%

TTI (Time to Interactive)

Value4.2 s

85/100

10%

Network Requests Diagram

pu.chemnet.com

1610 ms

www.chemnet.com

932 ms

font.css

416 ms

layout.css

625 ms

master.css

675 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Pu.chemnet.com, 68% (28 requests) were made to Chemnet.com and 29% (12 requests) were made to Images-a-china.chemnet.com. The less responsive or slowest element that took the longest time to load (1.9 sec) relates to the external source Images-a-china.chemnet.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 156.2 kB (59%)

Content Size

264.9 kB

After Optimization

108.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Pu.chemnet.com main page is 264.9 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. 25% of websites need less resources to load. Javascripts take 153.3 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 44.1 kB

  • Original 55.6 kB
  • After minification 53.0 kB
  • After compression 11.4 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 44.1 kB or 79% of the original size.

Image Optimization

-0%

Potential reduce by 189 B

  • Original 41.5 kB
  • After minification 41.3 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. Pu Chem Net images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 101.1 kB

  • Original 153.3 kB
  • After minification 152.1 kB
  • After compression 52.2 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 101.1 kB or 66% of the original size.

CSS Optimization

-74%

Potential reduce by 10.7 kB

  • Original 14.5 kB
  • After minification 12.6 kB
  • After compression 3.8 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. Pu.chemnet.com needs all CSS files to be minified and compressed as it can save up to 10.7 kB or 74% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (15%)

Requests Now

39

After Optimization

33

  • Images
  • JavaScript
  • CSS

The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Pu Chem Net. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

pu.chemnet.com

pu.chemnet.com

1610 ms

www.chemnet.com

www.chemnet.com

932 ms

font.css

font.css

416 ms

layout.css

layout.css

625 ms

master.css

master.css

675 ms

leftmenu.css

leftmenu.css

457 ms

web.js

web.js

502 ms

cateleft.js

cateleft.js

1044 ms

jquery.js

jquery.js

1427 ms

jquery.KinSlideshow-1.1.js

jquery.KinSlideshow-1.1.js

678 ms

chinatianyin370.gif

chinatianyin370.gif

1428 ms

bg.png

bg.png

208 ms

main.gif

main.gif

444 ms

logo.gif

logo.gif

480 ms

toocl_en.gif

toocl_en.gif

620 ms

yatai-chem.gif

yatai-chem.gif

659 ms

cpd140.gif

cpd140.gif

667 ms

cpd141.gif

cpd141.gif

722 ms

cpd142.gif

cpd142.gif

1010 ms

cpd143.gif

cpd143.gif

1030 ms

cpd144.gif

cpd144.gif

1105 ms

cpd145.gif

cpd145.gif

886 ms

cpd146.gif

cpd146.gif

1010 ms

cpd147.gif

cpd147.gif

1108 ms

cpd148.gif

cpd148.gif

1190 ms

cpd149.gif

cpd149.gif

1202 ms

zhe3.gif

zhe3.gif

1187 ms

keyuanchem270.gif

keyuanchem270.gif

1058 ms

wxredstar115.gif

wxredstar115.gif

1062 ms

whpharm-115.gif

whpharm-115.gif

1063 ms

lemonchem115.gif

lemonchem115.gif

1278 ms

jianpingchem.gif

jianpingchem.gif

1134 ms

ntacf370.jpg

ntacf370.jpg

1484 ms

chem-base2.gif

chem-base2.gif

1704 ms

ruijiachem.gif

ruijiachem.gif

1492 ms

chunxiaochem.gif

chunxiaochem.gif

1373 ms

toocle_en4.gif

toocle_en4.gif

1492 ms

tengyuanchem248.gif

tengyuanchem248.gif

1850 ms

catebg.gif

catebg.gif

1216 ms

bg01.gif

bg01.gif

343 ms

bg02.gif

bg02.gif

346 ms

Accessibility Review

pu.chemnet.com accessibility score

53

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

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

pu.chemnet.com 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

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

pu.chemnet.com SEO score

69

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Pu.chemnet.com can be misinterpreted by Google and other search engines. Our service has detected that English 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 Pu.chemnet.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

pu.chemnet.com

Open Graph description is not detected on the main page of Pu Chem Net. 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: