Tools & Wizards About Us
cheman.chemnet.com screenshot

Report Summary

  • 99

    Performance

    Renders faster than
    96% of other websites

  • 33

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

cheman.chemnet.com

化工助手-化工数据资源库-化工网

Page Load Speed

40.7 sec in total

First Response

483 ms

Resources Loaded

40.1 sec

Page Rendered

171 ms

cheman.chemnet.com screenshot

About Website

Click here to check amazing Cheman Chemnet content for China. Otherwise, check out these important facts you probably never knew about cheman.chemnet.com

化工助手-化工网(中国权威化工服务中心)

Visit cheman.chemnet.com

Key Findings

We analyzed Cheman.chemnet.com page load time and found that the first response time was 483 ms and then it took 40.2 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 3 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

cheman.chemnet.com performance score

99

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.2 s

99/100

10%

LCP (Largest Contentful Paint)

Value1.2 s

100/100

25%

SI (Speed Index)

Value3.1 s

93/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.061

97/100

15%

TTI (Time to Interactive)

Value1.2 s

100/100

10%

Network Requests Diagram

cheman.chemnet.com

483 ms

layout.css

221 ms

helps.css

376 ms

font.css

148 ms

input.js

19787 ms

Our browser made a total of 27 requests to load all elements on the main page. We found that 70% of them (19 requests) were addressed to the original Cheman.chemnet.com, 30% (8 requests) were made to China.chemnet.com. The less responsive or slowest element that took the longest time to load (20 sec) belongs to the original domain Cheman.chemnet.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 65.0 kB (59%)

Content Size

110.8 kB

After Optimization

45.9 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Cheman.chemnet.com main page is 110.8 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 46.3 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 31.0 kB

  • Original 37.9 kB
  • After minification 34.8 kB
  • After compression 6.9 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 31.0 kB or 82% of the original size.

Image Optimization

-26%

Potential reduce by 11.8 kB

  • Original 46.3 kB
  • After minification 34.5 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. Obviously, Cheman Chemnet needs image optimization as it can save up to 11.8 kB or 26% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-83%

Potential reduce by 22.2 kB

  • Original 26.7 kB
  • After minification 23.1 kB
  • After compression 4.5 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. Cheman.chemnet.com needs all CSS files to be minified and compressed as it can save up to 22.2 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (48%)

Requests Now

23

After Optimization

12

  • Images
  • CSS

The browser has sent 23 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cheman Chemnet. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

cheman.chemnet.com

cheman.chemnet.com

483 ms

layout.css

layout.css

221 ms

helps.css

helps.css

376 ms

font.css

font.css

148 ms

input.js

input.js

19787 ms

logo01.gif

logo01.gif

328 ms

menu_01.gif

menu_01.gif

250 ms

menu_03.gif

menu_03.gif

257 ms

top_bg03.gif

top_bg03.gif

255 ms

top_bg04.gif

top_bg04.gif

243 ms

new12.gif

new12.gif

251 ms

button01.gif

button01.gif

147 ms

tdchem237.gif

tdchem237.gif

314 ms

data.gif

data.gif

19995 ms

tcishanghai2.gif

tcishanghai2.gif

19995 ms

chemequ2.gif

chemequ2.gif

322 ms

tbb4_j.gif

tbb4_j.gif

150 ms

tbb1.gif

tbb1.gif

240 ms

Catch-1.jpg

Catch-1.jpg

19947 ms

Catch-2.jpg

Catch-2.jpg

16271 ms

bq1f3.gif

bq1f3.gif

380 ms

bq1f2.gif

bq1f2.gif

395 ms

bq1f.gif

bq1f.gif

447 ms

menu_02.gif

menu_02.gif

296 ms

top_bg02.gif

top_bg02.gif

296 ms

trade_button.gif

trade_button.gif

445 ms

bbj1.gif

bbj1.gif

505 ms

Accessibility Review

cheman.chemnet.com accessibility score

33

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.

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

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

High

Definition list items are not wrapped in <dl> elements

High

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

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

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

cheman.chemnet.com best practices score

67

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

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

cheman.chemnet.com SEO score

67

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

    ZH

  • Language Claimed

    N/A

  • Encoding

    GB2312

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

cheman.chemnet.com

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