2.4 sec in total
804 ms
1.5 sec
129 ms
Welcome to qchem.ru homepage info - get ready to check QChem best content for Russia right away, or after learning these important things about qchem.ru
автоматизация научно-исследовательской деятельности
Visit qchem.ruWe analyzed Qchem.ru page load time and found that the first response time was 804 ms and then it took 1.6 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.
qchem.ru performance score
name
value
score
weighting
Value5.5 s
6/100
10%
Value8.8 s
1/100
25%
Value7.7 s
25/100
10%
Value510 ms
57/100
30%
Value0.37
29/100
15%
Value16.2 s
6/100
10%
804 ms
542 ms
524 ms
273 ms
136 ms
Our browser made a total of 11 requests to load all elements on the main page. We found that all of those requests were addressed to Qchem.ru and no external sources were called. The less responsive or slowest element that took the longest time to load (804 ms) belongs to the original domain Qchem.ru.
Page size can be reduced by 9.1 kB (65%)
13.9 kB
4.8 kB
In fact, the total size of Qchem.ru main page is 13.9 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. HTML takes 7.6 kB which makes up the majority of the site volume.
Potential reduce by 5.4 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 956 B, which is 13% 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 5.4 kB or 71% of the original size.
Potential reduce by 0 B
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. QChem images are well optimized though.
Potential reduce by 3.6 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. Qchem.ru needs all CSS files to be minified and compressed as it can save up to 3.6 kB or 79% of the original size.
We found no issues to fix!
10
10
The browser has sent 10 CSS, Javascripts, AJAX and image requests in order to completely render the main page of QChem. According to our analytics all requests are already optimized.
qchem.ru
804 ms
nwrr.css
542 ms
hlogo.gif
524 ms
1x1.gif
273 ms
blogo.gif
136 ms
cbg.gif
136 ms
hbg.gif
138 ms
mdiv.gif
136 ms
jbg.jpg
242 ms
cman.gif
402 ms
bbg.gif
269 ms
qchem.ru 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
Links do not have a discernible name
qchem.ru 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
Missing source maps for large first-party JavaScript
qchem.ru SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
RU
N/A
WINDOWS-1251
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Qchem.ru can be misinterpreted by Google and other search engines. Our service has detected that Russian 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 Qchem.ru main page’s claimed encoding is windows-1251. 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.
qchem.ru
Open Graph description is not detected on the main page of QChem. 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: