11.3 sec in total
1.3 sec
9.8 sec
177 ms
Click here to check amazing Chem 8 content for United States. Otherwise, check out these important facts you probably never knew about chem8.org
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Visit chem8.orgWe analyzed Chem8.org page load time and found that the first response time was 1.3 sec and then it took 10 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
chem8.org performance score
name
value
score
weighting
Value0.6 s
100/100
10%
Value0.6 s
100/100
25%
Value1.2 s
100/100
10%
Value0 ms
100/100
30%
Value0
100/100
15%
Value0.6 s
100/100
10%
1302 ms
386 ms
585 ms
583 ms
880 ms
Our browser made a total of 31 requests to load all elements on the main page. We found that 77% of them (24 requests) were addressed to the original Chem8.org, 10% (3 requests) were made to Tcss.qq.com and 6% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (4.1 sec) relates to the external source Hm.baidu.com.
Page size can be reduced by 140.2 kB (59%)
236.5 kB
96.3 kB
In fact, the total size of Chem8.org main page is 236.5 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. 15% of websites need less resources to load. Javascripts take 94.2 kB which makes up the majority of the site volume.
Potential reduce by 16.2 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 16.2 kB or 63% of the original size.
Potential reduce by 5.4 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, Chem 8 needs image optimization as it can save up to 5.4 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 67.3 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 67.3 kB or 71% of the original size.
Potential reduce by 51.3 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. Chem8.org needs all CSS files to be minified and compressed as it can save up to 51.3 kB or 78% of the original size.
Number of requests can be reduced by 13 (45%)
29
16
The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chem 8. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.
chem8.org
1302 ms
386 ms
style_3_common.css
585 ms
style_3_portal_list.css
583 ms
common.js
880 ms
portal.js
584 ms
logging.js
592 ms
ping.js
478 ms
482369.js
1219 ms
discuz_tips.js
461 ms
ndsns_bodybg.png
293 ms
ndsns_topbg.png
291 ms
134007i2267gqi7mu6euuq.png
584 ms
logo.gif
294 ms
qq_login.gif
294 ms
ndsns_hdbg.jpg
292 ms
px.png
571 ms
newarow.gif
563 ms
pn.png
564 ms
ndsns_mainnav.png
563 ms
qmenu.png
570 ms
nav_bg01.png
855 ms
nav_bg03.png
858 ms
search.png
856 ms
feed.gif
858 ms
arw_r.gif
856 ms
toss_11.gif
240 ms
MTE4MTMxOA==.js
494 ms
h.js
4087 ms
hm.gif
448 ms
scrolltop.png
292 ms
chem8.org 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.
chem8.org best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
chem8.org SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Page is blocked from indexing
robots.txt is not valid
ZH
N/A
GBK
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Chem8.org 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 Chem8.org main page’s claimed encoding is gbk. 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.
chem8.org
Open Graph description is not detected on the main page of Chem 8. 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: