34.9 sec in total
1.6 sec
33.1 sec
294 ms
Visit lookchem.cn now to see the best up-to-date Lookchem content for China and also check out these interesting facts you probably never knew about lookchem.cn
专业化工网站,洛克化工网提供化工化工产品数据库、化工供求信息、化工供应商、化工字典等栏目。
Visit lookchem.cnWe analyzed Lookchem.cn page load time and found that the first response time was 1.6 sec and then it took 33.4 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 was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.
lookchem.cn performance score
name
value
score
weighting
Value5.1 s
8/100
10%
Value6.6 s
8/100
25%
Value9.1 s
14/100
10%
Value30 ms
100/100
30%
Value0.17
70/100
15%
Value8.3 s
40/100
10%
1556 ms
487 ms
1284 ms
523 ms
515 ms
Our browser made a total of 41 requests to load all elements on the main page. We found that 63% of them (26 requests) were addressed to the original Lookchem.cn, 5% (2 requests) were made to Count37.51yes.com and 5% (2 requests) were made to Pub.idqqimg.com. The less responsive or slowest element that took the longest time to load (20.4 sec) relates to the external source Beian.gov.cn.
Page size can be reduced by 148.7 kB (50%)
298.0 kB
149.3 kB
In fact, the total size of Lookchem.cn main page is 298.0 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. 20% of websites need less resources to load. Images take 125.5 kB which makes up the majority of the site volume.
Potential reduce by 33.8 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 33.8 kB or 75% of the original size.
Potential reduce by 10.6 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. Lookchem images are well optimized though.
Potential reduce by 97.3 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 97.3 kB or 83% of the original size.
Potential reduce by 7.0 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. Lookchem.cn needs all CSS files to be minified and compressed as it can save up to 7.0 kB or 70% of the original size.
Number of requests can be reduced by 6 (15%)
39
33
The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lookchem. 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.
www.lookchem.cn
1556 ms
JsTool.js
487 ms
jquery.js
1284 ms
AutoTips.js
523 ms
search.js
515 ms
Cookies.js
529 ms
main.css
790 ms
AutoTips.css
765 ms
common.css
793 ms
move_index.js
791 ms
stat.aspx
1210 ms
click.aspx
4527 ms
beianbgs.png
20355 ms
imbg.gif
524 ms
20150803044303.jpg
1532 ms
20151105021037.jpg
273 ms
20151105021119.jpg
263 ms
20151105021305.jpg
256 ms
20151105021257.jpg
272 ms
20151113033903.jpg
505 ms
20151113033951.jpg
509 ms
20151113034033.jpg
530 ms
20151113034112.jpg
786 ms
20151113034157.jpg
757 ms
www.baomanbio.com
1976 ms
www.ouhechem.com
1667 ms
3648 ms
www.slinchemical.com
4094 ms
www.commercecq.com
1488 ms
201509071023111.jpg
1209 ms
20151104044341.jpg
735 ms
20150423020158.gif
1261 ms
20160308111303.jpg
1474 ms
20160307033315.jpg
1007 ms
button_11.gif
471 ms
button_11.gif
454 ms
h.js
746 ms
count1.gif
743 ms
21.gif
892 ms
rem1.jpg
6664 ms
hm.gif
399 ms
lookchem.cn accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
<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
Image elements do not have [alt] attributes
Links do not have a discernible name
lookchem.cn best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
lookchem.cn SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
robots.txt is not valid
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
ZH
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Lookchem.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 Lookchem.cn 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.
lookchem.cn
Open Graph description is not detected on the main page of Lookchem. 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: