2.5 sec in total
484 ms
1.9 sec
141 ms
Welcome to is.czu.cz homepage info - get ready to check Is Czu best content for Czech Republic right away, or after learning these important things about is.czu.cz
University information system
Visit is.czu.czWe analyzed Is.czu.cz page load time and found that the first response time was 484 ms and then it took 2.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.
is.czu.cz performance score
name
value
score
weighting
Value5.2 s
8/100
10%
Value5.2 s
22/100
25%
Value7.5 s
27/100
10%
Value40 ms
100/100
30%
Value0.017
100/100
15%
Value5.9 s
65/100
10%
484 ms
225 ms
226 ms
283 ms
587 ms
Our browser made a total of 23 requests to load all elements on the main page. We found that 91% of them (21 requests) were addressed to the original Is.czu.cz, 9% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (815 ms) belongs to the original domain Is.czu.cz.
Page size can be reduced by 120.8 kB (66%)
184.2 kB
63.4 kB
In fact, the total size of Is.czu.cz main page is 184.2 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 160.2 kB which makes up the majority of the site volume.
Potential reduce by 7.1 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. 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 7.1 kB or 73% of the original size.
Potential reduce by 103.0 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 103.0 kB or 64% of the original size.
Potential reduce by 10.8 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. Is.czu.cz needs all CSS files to be minified and compressed as it can save up to 10.8 kB or 75% of the original size.
Number of requests can be reduced by 8 (36%)
22
14
The browser has sent 22 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Is Czu. 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.
is.czu.cz
484 ms
menitka.css
225 ms
base.css
226 ms
img.pl
283 ms
jquery.js
587 ms
uis.js
240 ms
img.pl
275 ms
img.pl
259 ms
img.pl
280 ms
img.pl
265 ms
img.pl
280 ms
img.pl
266 ms
img.pl
657 ms
img.pl
520 ms
img.pl
541 ms
img.pl
546 ms
img.pl
536 ms
img.pl
556 ms
img.pl
776 ms
img.pl
813 ms
img.pl
815 ms
analytics.js
25 ms
collect
14 ms
is.czu.cz accessibility score
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
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
Image elements do not have [alt] attributes
is.czu.cz 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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
is.czu.cz SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Page is blocked from indexing
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
EN
EN
ISO-8859-2
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Is.czu.cz can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Is.czu.cz main page’s claimed encoding is iso-8859-2. 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.
is.czu.cz
Open Graph description is not detected on the main page of Is Czu. 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: