7 sec in total
439 ms
5.7 sec
899 ms
Welcome to chemia.uj.edu.pl homepage info - get ready to check Chemia Uj best content for Poland right away, or after learning these important things about chemia.uj.edu.pl
Na wydziale kształcenie realizowane jest na trzech głównych kierunkach: chemia, chemia medyczna oraz ochrona środowiska. Zainteresowania badawcze naukowców skupiają się głównie wokół zagadnień chemii ...
Visit chemia.uj.edu.plWe analyzed Chemia.uj.edu.pl page load time and found that the first response time was 439 ms and then it took 6.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
chemia.uj.edu.pl performance score
name
value
score
weighting
Value6.7 s
2/100
10%
Value31.3 s
0/100
25%
Value13.9 s
1/100
10%
Value820 ms
35/100
30%
Value0.868
4/100
15%
Value25.2 s
0/100
10%
439 ms
1621 ms
338 ms
500 ms
401 ms
Our browser made a total of 77 requests to load all elements on the main page. We found that 82% of them (63 requests) were addressed to the original Chemia.uj.edu.pl, 6% (5 requests) were made to Fonts.gstatic.com and 5% (4 requests) were made to Uj.edu.pl. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Chemia.uj.edu.pl.
Page size can be reduced by 520.7 kB (49%)
1.1 MB
533.3 kB
In fact, the total size of Chemia.uj.edu.pl main page is 1.1 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. 70% of websites need less resources to load. Images take 585.1 kB which makes up the majority of the site volume.
Potential reduce by 113.1 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 30.8 kB, which is 24% 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 113.1 kB or 87% of the original size.
Potential reduce by 386.9 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, Chemia Uj needs image optimization as it can save up to 386.9 kB or 66% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 5.6 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. This website has mostly compressed JavaScripts.
Potential reduce by 15.1 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. Chemia.uj.edu.pl needs all CSS files to be minified and compressed as it can save up to 15.1 kB or 12% of the original size.
Number of requests can be reduced by 49 (71%)
69
20
The browser has sent 69 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chemia Uj. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 43 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.
chemia.uj.edu.pl
439 ms
chemia.uj.edu.pl
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barebone.jsp
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chemia.uj.edu.pl 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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
[id] attributes on active, focusable elements are not unique
Some elements have a [tabindex] value greater than 0
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 valid value for its [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
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.
chemia.uj.edu.pl 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
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
chemia.uj.edu.pl 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
PL
PL
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Chemia.uj.edu.pl can be misinterpreted by Google and other search engines. Our service has detected that Polish is used on the page, and it matches the claimed language. Our system also found out that Chemia.uj.edu.pl 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.
chemia.uj.edu.pl
Open Graph description is not detected on the main page of Chemia Uj. 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: