2 sec in total
240 ms
1.5 sec
193 ms
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Chemical Forums - Index
Visit chemicalforums.comWe analyzed Chemicalforums.com page load time and found that the first response time was 240 ms and then it took 1.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.
chemicalforums.com performance score
name
value
score
weighting
Value7.0 s
1/100
10%
Value8.9 s
1/100
25%
Value8.1 s
21/100
10%
Value10,930 ms
0/100
30%
Value0.063
97/100
15%
Value22.0 s
1/100
10%
240 ms
123 ms
51 ms
126 ms
51 ms
Our browser made a total of 70 requests to load all elements on the main page. We found that 37% of them (26 requests) were addressed to the original Chemicalforums.com, 9% (6 requests) were made to Pagead2.googlesyndication.com and 6% (4 requests) were made to Dt.adsafeprotected.com. The less responsive or slowest element that took the longest time to load (240 ms) belongs to the original domain Chemicalforums.com.
Page size can be reduced by 587.4 kB (69%)
856.5 kB
269.1 kB
In fact, the total size of Chemicalforums.com main page is 856.5 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. 55% of websites need less resources to load. Javascripts take 720.2 kB which makes up the majority of the site volume.
Potential reduce by 46.0 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 46.0 kB or 81% of the original size.
Potential reduce by 1.1 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 Forums images are well optimized though.
Potential reduce by 492.3 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 492.3 kB or 68% of the original size.
Potential reduce by 48.0 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. Chemicalforums.com needs all CSS files to be minified and compressed as it can save up to 48.0 kB or 84% of the original size.
Number of requests can be reduced by 51 (77%)
66
15
The browser has sent 66 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chemical Forums. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and as a result speed up the page load time.
index.php
240 ms
index.css
123 ms
webkit.css
51 ms
script.js
126 ms
theme.js
51 ms
MathJax.js
12 ms
jquery.min.js
31 ms
sha1.js
49 ms
show_ads.js
6 ms
TeX-AMS-MML_HTMLorMML.js
81 ms
analytics.js
65 ms
ca-pub-4895971628408359.js
87 ms
zrt_lookup.html
144 ms
show_ads_impl.js
84 ms
catbg.jpg
108 ms
titlebg.jpg
110 ms
maintab_first.gif
109 ms
maintab_active_last.gif
110 ms
maintab_active_first.gif
108 ms
maintab_active_back.gif
110 ms
maintab_back.gif
122 ms
maintab_last.gif
123 ms
chembuddy.png
121 ms
icon-yellow.png
123 ms
icon-blue.png
123 ms
icon-grey.png
123 ms
icon-chemreddit.png
164 ms
off.gif
163 ms
collapse.gif
166 ms
info.gif
167 ms
online.gif
166 ms
login.gif
167 ms
expand.gif
209 ms
mathjax_config.js
187 ms
collect
67 ms
ads
151 ms
osd.js
7 ms
mhchem.js
3 ms
75 ms
adj
66 ms
beacon
49 ms
click%253Fd%253DAPEucNWe8O-UEBpUZe57eJfjY11JDMZF1YsQQNXj7hu2zdue9tG0P-ofs29gXHv_TONfvXaPwvsErEHxc2UBNyheZNktTNBD1JZnNPSVlXQFlzANqLhZfQw%2526r1%253D;ord=1456752667;dc_lat=;dc_rdid=;tag_for_child_directed_treatment=
83 ms
c-20641
50 ms
verify_selector.js
147 ms
blank.gif
144 ms
beacon.js
48 ms
bapi
78 ms
ds.png
99 ms
dt
58 ms
click%253Fd%253DAPEucNWe8O-UEBpUZe57eJfjY11JDMZF1YsQQNXj7hu2zdue9tG0P-ofs29gXHv_TONfvXaPwvsErEHxc2UBNyheZNktTNBD1JZnNPSVlXQFlzANqLhZfQw%2526r1%253D;ord=1456752667;dc_lat=;dc_rdid=;tag_for_child_directed_treatment=
66 ms
dtc
12 ms
html_inpage_rendering_lib_200_111.js
22 ms
verifyr.js
47 ms
activityi;src=4236808;type=invmedia;cat=qk1cfvwl;ord=1420316396
128 ms
activityi;src=4236808;type=invmedia;cat=aoyjbkr6;ord=1420316396
124 ms
activityi;src=4236808;type=invmedia;cat=ijhardnr;ord=1420316396
97 ms
activityi;src=4236808;type=invmedia;cat=4ztf2oue;ord=1420316396
153 ms
dbapi
35 ms
0
124 ms
pixel
35 ms
dt
63 ms
lidar.js
45 ms
sbhK2lTE.js
109 ms
dt
68 ms
dt
92 ms
pixel
96 ms
pixel
125 ms
cTrvNaRi.html
10 ms
E4WYPs_lNJIuXrWpTsOcc3FIG36RfI0ERc0srw5QW9Y.js
3 ms
sd
29 ms
chemicalforums.com accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[aria-*] attributes do not match their roles
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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
<frame> or <iframe> elements do not have a title
Form elements do not have associated labels
Links do not have a discernible name
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
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.
chemicalforums.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
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
chemicalforums.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Page is blocked from indexing
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
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Chemicalforums.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 Chemicalforums.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.
chemicalforums.com
Open Graph data is detected on the main page of Chemical Forums. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: