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ichemistry.cn: CAS_CAS号查询_CAS no查询 - 爱化学

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!

Page load speed analysis

  • 48/100

    Normal result
  • 6

    Successful tests
  • 2

    Failed tests
  • First response

    10.3 sec

  • Resources loaded

    17.5 sec

  • Page rendered

    84 ms

  • Total page load time

    27.8 sec

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

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 90% of websites can load faster.

Page optimization

  • HTML 17.3 kB
    Images 12.0 kB
    Javascripts 54.5 kB
    CSS 2.3 kB

    In fact, the total size of Ichemistry.cn main page is 86.1 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. Javascripts take 54.5 kB which makes up the majority of the site volume.

    • Original 17.3 kB
    • After minification 17.2 kB
    • After compression 6.8 kB

    HTML optimization

    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.

    • Original 12.0 kB
    • After optimization 8.8 kB

    Image optimization

    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.

    • Original 54.5 kB
    • After minification 54.4 kB
    • After compression 21.7 kB

    JavaScript optimization

    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 32.7 kB or 60% of the original size.

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

    CSS optimization

    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.

Network requests diagram

  • www.ichemistry.cn
  • index.css
  • ichemistry.gif
  • index-add160x60-3.gif
  • 18663950.js
  • index.js
  • email.jpg
  • h.js
  • s.js
  • hm.gif
  • icon_0.gif
  • shell_v2.js
  • logger.js
  • bds_s_v2.js

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.

Additional info on ichemistry.cn

Requests

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.

7

Javascripts

5

Images

1

CSS

13

All

Possible request optimization

1

Javascripts

5

Images

1

CSS

6

Optimized

7

All

Good result

IP address

Ichemistry.cn uses IP address which is currently shared with 1 other domain. The more sites share the same IP address, the higher the host server’s workload is. It is strongly recommended that the host server should be changed or the hosting provider should be requested to give a different (separate) IP address for this domain.

Normal result

IP Trace

ichemistry.cn

wxzhenhua.cn

218.85.137.21

DNS records

Type Host Target/ip TTL Other
A

ichemistry.cn

218.85.133.79 300
NS

ichemistry.cn

f1g1ns2.dnspod.net 299
NS

ichemistry.cn

f1g1ns1.dnspod.net 299
SOA

ichemistry.cn

300 Mname: f1g1ns1.dnspod.net
Rname: freednsadmin.dnspod.com
Serial: 1433605205
Refresh: 3600
Retry: 180
Expire: 1209600
Minimum-ttl: 180
MX

ichemistry.cn

mail.ichemistry.cn 300 Pri: 10

Language and encoding

Poor result

Language

ZH zh language flag

Detected

N/A  language flag

Claimed

Encoding

GB2312

Claimed

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.

HTTPS certificate

SSL Certificate

Ichemistry.cn has no SSL certificate. Web browsing can be safer with HTTPS connection, so we suggest that it should be obtained for this site.

Normal result

Visitor World Map

Country of origin for 89.7% of all visits is China. It’s good for Ichemistry.cn that their server is also located in China, as that enables the majority of their visitors to benefit from a much faster page load time.

Good result

Poor result

Social Sharing Optimization

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:

ichemistry.cn

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