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Report Summary

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    Performance

  • 0

    Accessibility

  • 0

    Best Practices

  • 0

    SEO

ichemistry.cn

CAS_CAS号查询_CAS no查询 - 爱化学

Page Load Speed

27.8 sec in total

First Response

10.3 sec

Resources Loaded

17.5 sec

Page Rendered

84 ms

ichemistry.cn screenshot

About Website

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

CAS查询网站提供化工产品资料、化学品查询,支持化学品的CAS号(CAS登记号),中文名称,英文名称,分子式,化学式等查询;也支持化学结构检索!

Visit ichemistry.cn

Key Findings

We analyzed Ichemistry.cn page load time and found that the first response time was 10.3 sec and then it took 17.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

ichemistry.cn performance score

0

Network Requests Diagram

www.ichemistry.cn

10263 ms

index.css

1108 ms

ichemistry.gif

1112 ms

index-add160x60-3.gif

4642 ms

18663950.js

4095 ms

Our browser made a total of 14 requests to load all elements on the main page. We found that 43% of them (6 requests) were addressed to the original Ichemistry.cn, 21% (3 requests) were made to Bdimg.share.baidu.com and 14% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (10.3 sec) belongs to the original domain Ichemistry.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 47.4 kB (55%)

Content Size

85.5 kB

After Optimization

38.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ichemistry.cn main page is 85.5 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. Javascripts take 53.9 kB which makes up the majority of the site volume.

HTML Optimization

-61%

Potential reduce by 10.5 kB

  • Original 17.3 kB
  • After minification 17.2 kB
  • After compression 6.8 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 10.5 kB or 61% of the original size.

Image Optimization

-27%

Potential reduce by 3.2 kB

  • Original 12.0 kB
  • After minification 8.8 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, Ichemistry needs image optimization as it can save up to 3.2 kB or 27% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-60%

Potential reduce by 32.2 kB

  • Original 53.9 kB
  • After minification 53.9 kB
  • After compression 21.7 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 32.2 kB or 60% of the original size.

CSS Optimization

-64%

Potential reduce by 1.5 kB

  • Original 2.3 kB
  • After minification 2.1 kB
  • After compression 846 B

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. Ichemistry.cn needs all CSS files to be minified and compressed as it can save up to 1.5 kB or 64% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (46%)

Requests Now

13

After Optimization

7

  • Images
  • JavaScript
  • CSS

The browser has sent 13 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ichemistry. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.ichemistry.cn

www.ichemistry.cn

10263 ms

index.css

index.css

1108 ms

ichemistry.gif

ichemistry.gif

1112 ms

index-add160x60-3.gif

index-add160x60-3.gif

4642 ms

18663950.js

18663950.js

4095 ms

index.js

index.js

1115 ms

email.jpg

email.jpg

1614 ms

h.js

h.js

1164 ms

s.js

s.js

1757 ms

hm.gif

hm.gif

328 ms

icon_0.gif

icon_0.gif

955 ms

shell_v2.js

shell_v2.js

611 ms

logger.js

logger.js

307 ms

bds_s_v2.js

bds_s_v2.js

1219 ms

SEO Factors

ichemistry.cn SEO score

0

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 Ichemistry.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 Ichemistry.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

ichemistry.cn

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