6.3 sec in total
349 ms
5 sec
1000 ms
Visit slevykurzu.cz now to see the best up-to-date Slevykurzu content for Czech Republic and also check out these interesting facts you probably never knew about slevykurzu.cz
Výhodné akce! Zlevněná poslední volná místa v kurzech všech druhů – jazykové kurzy, autoškoly, počítačové kurzy, fotografické kurzy, kurzy horolezectví, angličtina, němčina, účetnictví. Dvoudenn...
Visit slevykurzu.czWe analyzed Slevykurzu.cz page load time and found that the first response time was 349 ms and then it took 6 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
slevykurzu.cz performance score
name
value
score
weighting
Value3.4 s
38/100
10%
Value4.6 s
36/100
25%
Value5.4 s
56/100
10%
Value3,940 ms
1/100
30%
Value0.057
98/100
15%
Value14.8 s
8/100
10%
349 ms
1263 ms
330 ms
225 ms
22 ms
Our browser made a total of 185 requests to load all elements on the main page. We found that 35% of them (65 requests) were addressed to the original Slevykurzu.cz, 37% (69 requests) were made to Scontent.xx.fbcdn.net and 8% (14 requests) were made to Facebook.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Slevykurzu.cz.
Page size can be reduced by 680.5 kB (52%)
1.3 MB
618.8 kB
In fact, the total size of Slevykurzu.cz main page is 1.3 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. 65% of websites need less resources to load. Images take 532.7 kB which makes up the majority of the site volume.
Potential reduce by 208.4 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 99.3 kB, which is 44% 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 208.4 kB or 92% of the original size.
Potential reduce by 60.4 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, Slevykurzu needs image optimization as it can save up to 60.4 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 226.1 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 226.1 kB or 68% of the original size.
Potential reduce by 185.6 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. Slevykurzu.cz needs all CSS files to be minified and compressed as it can save up to 185.6 kB or 89% of the original size.
Number of requests can be reduced by 45 (25%)
181
136
The browser has sent 181 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Slevykurzu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
slevykurzu.cz
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slevykurzu.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
[id] attributes on active, focusable elements are not unique
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
Image elements do not have [alt] attributes
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
slevykurzu.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
Browser errors were logged to the console
slevykurzu.cz SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
CS
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Slevykurzu.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 Slevykurzu.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.
slevykurzu.cz
Open Graph description is not detected on the main page of Slevykurzu. 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: