4.7 sec in total
340 ms
4.2 sec
143 ms
Visit trebesin.cz now to see the best up-to-date Trebesin content for Czech Republic and also check out these interesting facts you probably never knew about trebesin.cz
Střední průmyslová škola a Gymnázium Třebešín na Praze 10, nabízí odborné vzdělávání v oborech Strojírenství, Informační technologie, Technické lyceum a Gymnázium se zaměřením na aplikovanou informati...
Visit trebesin.czWe analyzed Trebesin.cz page load time and found that the first response time was 340 ms and then it took 4.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.
trebesin.cz performance score
name
value
score
weighting
Value6.9 s
1/100
10%
Value14.3 s
0/100
25%
Value19.1 s
0/100
10%
Value30,530 ms
0/100
30%
Value0.77
5/100
15%
Value52.4 s
0/100
10%
340 ms
1258 ms
229 ms
515 ms
118 ms
Our browser made a total of 17 requests to load all elements on the main page. We found that 94% of them (16 requests) were addressed to the original Trebesin.cz, 6% (1 request) were made to Miniaplikace.blueboard.cz. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Trebesin.cz.
Page size can be reduced by 33.9 kB (25%)
135.9 kB
102.0 kB
In fact, the total size of Trebesin.cz main page is 135.9 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. Only 10% of websites need less resources to load. Images take 123.2 kB which makes up the majority of the site volume.
Potential reduce by 4.4 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 1.2 kB, which is 18% 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 4.4 kB or 66% of the original size.
Potential reduce by 24.6 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, Trebesin needs image optimization as it can save up to 24.6 kB or 20% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 4.9 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. Trebesin.cz needs all CSS files to be minified and compressed as it can save up to 4.9 kB or 82% of the original size.
We found no issues to fix!
12
12
The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Trebesin. According to our analytics all requests are already optimized.
trebesin.cz
340 ms
www.trebesin.cz
1258 ms
index.css
229 ms
counter_1.php
515 ms
back_all.png
118 ms
back_1.png
119 ms
logo.png
348 ms
obory.gif
582 ms
back_2.png
235 ms
aktual108.jpg
352 ms
aktual156.jpg
470 ms
aktual21.jpg
355 ms
icon-search.png
351 ms
bot.png
811 ms
calibri.ttf
1860 ms
segoeuil.ttf
1385 ms
cambria.ttc
2091 ms
trebesin.cz 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 input fields do not have accessible names
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
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
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
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.
trebesin.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
trebesin.cz 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
CS
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Trebesin.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and it matches the claimed language. Our system also found out that Trebesin.cz 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.
trebesin.cz
Open Graph description is not detected on the main page of Trebesin. 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: