4.7 sec in total
336 ms
3.8 sec
569 ms
Visit dobryskolak.cz now to see the best up-to-date Dobryskolak content and also check out these interesting facts you probably never knew about dobryskolak.cz
Nejširší výběr školních a výtvarných potřeb. Specialista na kancelářské potřeby, tiskopisy, hry a stavebnice, učebnice, odbornou literaturu a beletrii.
Visit dobryskolak.czWe analyzed Dobryskolak.cz page load time and found that the first response time was 336 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.
dobryskolak.cz performance score
name
value
score
weighting
Value4.2 s
19/100
10%
Value12.5 s
0/100
25%
Value7.1 s
31/100
10%
Value1,450 ms
15/100
30%
Value0.007
100/100
15%
Value18.8 s
3/100
10%
336 ms
1118 ms
532 ms
551 ms
21 ms
Our browser made a total of 151 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Dobryskolak.cz, 25% (38 requests) were made to Sevt.cz and 9% (13 requests) were made to Eu-sonar.sociomantic.com. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Sevt.cz.
Page size can be reduced by 1.0 MB (38%)
2.7 MB
1.7 MB
In fact, the total size of Dobryskolak.cz main page is 2.7 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. 45% of websites need less resources to load. Images take 1.5 MB which makes up the majority of the site volume.
Potential reduce by 154.0 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 39.0 kB, which is 21% 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 154.0 kB or 85% of the original size.
Potential reduce by 115.3 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. Dobryskolak images are well optimized though.
Potential reduce by 407.1 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 407.1 kB or 73% of the original size.
Potential reduce by 332.7 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. Dobryskolak.cz needs all CSS files to be minified and compressed as it can save up to 332.7 kB or 86% of the original size.
Number of requests can be reduced by 94 (67%)
140
46
The browser has sent 140 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dobryskolak. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 32 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
dobryskolak.cz
336 ms
www.sevt.cz
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GetResource.ashx
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GetResource.ashx
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html5.js
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jquery.min.js
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latest.js
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main.js
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getSetReff.min.js
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actions.js
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gjs.php
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sociomantic
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dobryskolak.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.
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
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
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.
dobryskolak.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
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
Issues were logged in the Issues panel in Chrome Devtools
dobryskolak.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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dobryskolak.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Dobryskolak.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.
dobryskolak.cz
Open Graph description is not detected on the main page of Dobryskolak. 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: