9.8 sec in total
1.7 sec
7.8 sec
276 ms
Click here to check amazing Chemdevelop content. Otherwise, check out these important facts you probably never knew about chemdevelop.com
化工新闻网-打造最专业的化工新闻门户
Visit chemdevelop.comWe analyzed Chemdevelop.com page load time and found that the first response time was 1.7 sec and then it took 8.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster. This domain responded with an error, which can significantly jeopardize Chemdevelop.com rating and web reputation
chemdevelop.com performance score
name
value
score
weighting
Value6.8 s
2/100
10%
Value9.6 s
0/100
25%
Value9.5 s
12/100
10%
Value120 ms
97/100
30%
Value0.001
100/100
15%
Value9.2 s
32/100
10%
1745 ms
4315 ms
933 ms
1861 ms
1395 ms
Our browser made a total of 21 requests to load all elements on the main page. We found that all of those requests were addressed to Chemdevelop.com and no external sources were called. The less responsive or slowest element that took the longest time to load (4.3 sec) belongs to the original domain Chemdevelop.com.
Page size can be reduced by 165.2 kB (56%)
292.8 kB
127.6 kB
In fact, the total size of Chemdevelop.com main page is 292.8 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. Javascripts take 108.6 kB which makes up the majority of the site volume.
Potential reduce by 85.2 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 85.2 kB or 84% of the original size.
Potential reduce by 2.0 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. Chemdevelop images are well optimized though.
Potential reduce by 72.8 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 72.8 kB or 67% of the original size.
Potential reduce by 5.2 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. Chemdevelop.com needs all CSS files to be minified and compressed as it can save up to 5.2 kB or 76% of the original size.
Number of requests can be reduced by 7 (39%)
18
11
The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chemdevelop. 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.
chemdevelop.com
1745 ms
www.chemdevelop.com
4315 ms
global.css
933 ms
jquery.min.js
1861 ms
global.js
1395 ms
logo.jpg
476 ms
s_cur.gif
234 ms
s_bg.gif
238 ms
ssousuo.gif
466 ms
navline.png
468 ms
980_2.jpg
1394 ms
icon_2.jpg
469 ms
1216105543_lit.jpg
486 ms
101P94317_lit.jpg
707 ms
1J602H14_lit.jpg
728 ms
1J522b05_lit.jpg
1434 ms
1J13A208_lit.jpg
1188 ms
290.jpg
719 ms
675.jpg
940 ms
290_2.jpg
952 ms
980_1.jpg
959 ms
chemdevelop.com accessibility score
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
Buttons do not have an accessible name
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
List items (<li>) are not contained within <ul> or <ol> parent elements.
chemdevelop.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
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 uses legible font sizes
Tap targets are not sized appropriately
ZH
N/A
GB2312
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Chemdevelop.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 Chemdevelop.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.
chemdevelop.com
Open Graph description is not detected on the main page of Chemdevelop. 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: