11.8 sec in total
486 ms
10.1 sec
1.2 sec
Visit presto-skola.cz now to see the best up-to-date Presto Skola content for Czech Republic and also check out these interesting facts you probably never knew about presto-skola.cz
Jazyková škola Presto poskytuje individuální i firemní výuku jazyků již od roku 2001. Učte se se zkušenými lektory s plánem výuky na míru.
Visit presto-skola.czWe analyzed Presto-skola.cz page load time and found that the first response time was 486 ms and then it took 11.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
presto-skola.cz performance score
name
value
score
weighting
Value4.9 s
10/100
10%
Value12.0 s
0/100
25%
Value19.0 s
0/100
10%
Value12,220 ms
0/100
30%
Value0.441
21/100
15%
Value18.7 s
3/100
10%
486 ms
2236 ms
369 ms
379 ms
388 ms
Our browser made a total of 62 requests to load all elements on the main page. We found that 81% of them (50 requests) were addressed to the original Presto-skola.cz, 3% (2 requests) were made to Platform.linkedin.com and 3% (2 requests) were made to C.imedia.cz. The less responsive or slowest element that took the longest time to load (6.1 sec) belongs to the original domain Presto-skola.cz.
Page size can be reduced by 216.0 kB (13%)
1.7 MB
1.4 MB
In fact, the total size of Presto-skola.cz main page is 1.7 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. 35% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.
Potential reduce by 18.8 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 18.8 kB or 73% of the original size.
Potential reduce by 13.0 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. Presto Skola images are well optimized though.
Potential reduce by 149.2 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 149.2 kB or 66% of the original size.
Potential reduce by 35.0 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. Presto-skola.cz needs all CSS files to be minified and compressed as it can save up to 35.0 kB or 81% of the original size.
Number of requests can be reduced by 18 (35%)
52
34
The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Presto Skola. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
presto-skola.cz
486 ms
www.presto-skola.cz
2236 ms
jquery.fancybox.css
369 ms
jquery.fancybox-buttons.css
379 ms
jquery.fancybox-thumbs.css
388 ms
project.css
381 ms
jquery-1.11.2.min.js
961 ms
jquery-migrate-1.2.1.min.js
525 ms
main.min.js
586 ms
jquery.mousewheel-3.0.6.pack.js
619 ms
jquery.fancybox.pack.js
772 ms
jquery.fancybox-buttons.js
691 ms
jquery.fancybox-thumbs.js
724 ms
rhinoslider-1.05.js
926 ms
fade.js
837 ms
in.js
197 ms
swfobject.js
750 ms
retargeting.js
1346 ms
analytics.js
189 ms
bg_body_main.jpg
6086 ms
bg_body2_main.jpg
3045 ms
bg_body3_main.jpg
3696 ms
bg_body4_main.jpg
3588 ms
bg_body5_main.jpg
838 ms
bg_b1.png
308 ms
bg_b2.png
457 ms
bg_b4.png
616 ms
bg_b5.png
1230 ms
bg_b3.png
994 ms
bg_b6.png
1157 ms
bg_welcome.png
1328 ms
bg_news_more.png
1381 ms
bg_logo.png
1987 ms
ico_phone.png
2122 ms
bg_searchform.gif
2136 ms
btn_search.png
2251 ms
ico_fb.png
2281 ms
ajsm.jpg
2982 ms
msmt.jpg
2423 ms
ursc.png
2579 ms
burreaum.png
3853 ms
toeicc.png
3413 ms
etsc.png
4123 ms
secureAnonymousFramework
1979 ms
aller_rg-webfont.woff
4670 ms
allerdisplay-webfont.woff
3852 ms
aller_bd-webfont.woff
4082 ms
aller_lt-webfont.woff
3955 ms
aller_bdit-webfont.woff
4150 ms
aller_it-webfont.woff
4108 ms
bg_clients.gif
4221 ms
bullet.png
4223 ms
bg_logo-white.png
4237 ms
watch.js
1 ms
collect
81 ms
collect
274 ms
all.js
480 ms
retargeting
162 ms
403 ms
xd_arbiter.php
1095 ms
xd_arbiter.php
1209 ms
print.css
418 ms
presto-skola.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
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.
presto-skola.cz best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
presto-skola.cz SEO score
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 Presto-skola.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 Presto-skola.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.
presto-skola.cz
Open Graph description is not detected on the main page of Presto Skola. 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: