3.3 sec in total
597 ms
2.5 sec
294 ms
Click here to check amazing Zsuj content for Czech Republic. Otherwise, check out these important facts you probably never knew about zsuj.cz
ZŠ Uhlířské Janovice
Visit zsuj.czWe analyzed Zsuj.cz page load time and found that the first response time was 597 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
zsuj.cz performance score
name
value
score
weighting
Value5.0 s
10/100
10%
Value5.7 s
16/100
25%
Value7.0 s
32/100
10%
Value10 ms
100/100
30%
Value0.525
14/100
15%
Value5.0 s
77/100
10%
597 ms
107 ms
202 ms
208 ms
211 ms
Our browser made a total of 46 requests to load all elements on the main page. We found that all of those requests were addressed to Zsuj.cz and no external sources were called. The less responsive or slowest element that took the longest time to load (625 ms) belongs to the original domain Zsuj.cz.
Page size can be reduced by 245.4 kB (33%)
739.0 kB
493.6 kB
In fact, the total size of Zsuj.cz main page is 739.0 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. 35% of websites need less resources to load. Images take 432.6 kB which makes up the majority of the site volume.
Potential reduce by 15.8 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 15.8 kB or 76% of the original size.
Potential reduce by 23.2 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. Zsuj images are well optimized though.
Potential reduce by 133.7 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 133.7 kB or 68% of the original size.
Potential reduce by 72.8 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. Zsuj.cz needs all CSS files to be minified and compressed as it can save up to 72.8 kB or 81% of the original size.
Number of requests can be reduced by 23 (52%)
44
21
The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zsuj. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
www.zsuj.cz
597 ms
style.css
107 ms
highslide.css
202 ms
slideshow_s2.css
208 ms
funkce.js
211 ms
highslide-full.packed.js
313 ms
highslide.cfg.js.php
262 ms
dom.js
212 ms
menu.js
301 ms
mootools-1.3.2-core.js
409 ms
mootools-1.3.2.1-more.js
303 ms
slideshow.js
322 ms
slideshow.flash.js
360 ms
slideshow.fold.js
400 ms
slideshow.kenburns.js
406 ms
slideshow.push.js
440 ms
body.gif
102 ms
box.jpg
398 ms
logo.png
203 ms
logo2.jpg
102 ms
menu_top_li.gif
106 ms
menu_li.gif
104 ms
menu_ulul.gif
201 ms
menu_lili_1.gif
201 ms
ft_mini_inp.gif
206 ms
ft_mini_submit.gif
210 ms
tisk.gif
301 ms
navi.gif
303 ms
cs_act.gif
302 ms
en.gif
316 ms
de.gif
317 ms
5csleft_1.jpg
400 ms
5csleft_2.jpg
401 ms
box_btm.png
402 ms
prvni.jpg
511 ms
1.jpg
625 ms
logo_gc.png
494 ms
slideshow_maska1.png
487 ms
slideshow_maska2.png
461 ms
loader.png
462 ms
druhy.jpg
201 ms
2.jpg
201 ms
style_print.css
103 ms
rounded-white.png
102 ms
zoomout.cur
100 ms
loader.white.gif
103 ms
zsuj.cz 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
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
zsuj.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
zsuj.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
Tap targets are not sized appropriately
CS
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zsuj.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 Zsuj.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.
zsuj.cz
Open Graph description is not detected on the main page of Zsuj. 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: