43.5 sec in total
1000 ms
29.3 sec
13.2 sec
Click here to check amazing Chemical Book content for China. Otherwise, check out these important facts you probably never knew about chemicalbook.com
Chemicalbook is a platform dedicated to provide the most valuable resources for chemical industry users. Here you can get chemical information (such as chemical physical properties, safety data, Excel...
Visit chemicalbook.comWe analyzed Chemicalbook.com page load time and found that the first response time was 1000 ms and then it took 42.5 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.
chemicalbook.com performance score
name
value
score
weighting
Value2.7 s
59/100
10%
Value3.9 s
51/100
25%
Value4.1 s
79/100
10%
Value130 ms
96/100
30%
Value1.051
2/100
15%
Value4.7 s
80/100
10%
1000 ms
462 ms
2807 ms
515 ms
403 ms
Our browser made a total of 57 requests to load all elements on the main page. We found that all of those requests were addressed to Chemicalbook.com and no external sources were called. The less responsive or slowest element that took the longest time to load (20.2 sec) belongs to the original domain Chemicalbook.com.
Page size can be reduced by 746.6 kB (39%)
1.9 MB
1.2 MB
In fact, the total size of Chemicalbook.com main page is 1.9 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 50% of websites need less resources to load. Images take 948.2 kB which makes up the majority of the site volume.
Potential reduce by 67.6 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. This page needs HTML code to be minified as it can gain 31.2 kB, which is 40% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 67.6 kB or 86% of the original size.
Potential reduce by 25.2 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. Chemical Book images are well optimized though.
Potential reduce by 543.2 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 543.2 kB or 73% of the original size.
Potential reduce by 110.5 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. Chemicalbook.com needs all CSS files to be minified and compressed as it can save up to 110.5 kB or 79% of the original size.
Number of requests can be reduced by 14 (26%)
53
39
The browser has sent 53 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chemical Book. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
chemicalbook.com
1000 ms
www.chemicalbook.com
462 ms
www.chemicalbook.com
2807 ms
jquery-ui.min.css
515 ms
base.css
403 ms
index.css
1313 ms
common.css
371 ms
jquery-1.11.1.min.js
912 ms
jquery-ui.min.js
3926 ms
jquery.common.js
497 ms
json2.js
527 ms
jquery.productCas.js
566 ms
login-global.js
598 ms
fastregister-global.js
792 ms
ajaxfileupload.js
784 ms
globalinquiry.js
784 ms
jquery.fly.js
768 ms
productindex_en.js
753 ms
common-global.js
753 ms
languang_03.jpg
232 ms
languang_05.jpg
265 ms
languang_09.jpg
265 ms
languang_07.jpg
264 ms
en-icon_productlist.png
2246 ms
logo.gif
2101 ms
banner.jpg
208 ms
capotchemen.gif
207 ms
adv-s.png
2152 ms
adv-b.jpg
2902 ms
adv-a.jpg
206 ms
adv-d.jpg
2902 ms
adv-aifaeasar.jpg
2071 ms
adv-tcl.jpg
2040 ms
adv-sigma.jpg
2123 ms
pro.jpg
2041 ms
pro2.jpg
2040 ms
pro3.jpg
2041 ms
pro4.jpg
2042 ms
pro5.jpg
2042 ms
pro6.jpg
2041 ms
pro7.jpg
2154 ms
pro8.jpg
2028 ms
pro9.jpg
2106 ms
pro10.jpg
2107 ms
step_03.png
2106 ms
GetPackAgeUnitOfInquiry.ashx
898 ms
GetPortOfInquiry.ashx
1377 ms
GetCountry.ashx
1415 ms
seachr.png
915 ms
HomeIcon.png
870 ms
catalog.png
867 ms
line.png
20173 ms
Adv-bj.png
913 ms
bj.jpg
1670 ms
icon-1.png
873 ms
arrangement_bj.jpg
883 ms
Message.html
785 ms
chemicalbook.com 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
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
chemicalbook.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
chemicalbook.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).
Impact
Issue
Document doesn't use legible font sizes
Tap targets are not sized appropriately
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Chemicalbook.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 Chemicalbook.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.
chemicalbook.com
Open Graph description is not detected on the main page of Chemical Book. 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: