7.5 sec in total
481 ms
6.3 sec
706 ms
Welcome to mail09.centrum.sk homepage info - get ready to check Mail 09 Centrum best content for Slovakia right away, or after learning these important things about mail09.centrum.sk
Centrum.cz je český internetový portál nabízející e-mail, aktuální zpravodajství, počasí a další zajímavé služby.
Visit mail09.centrum.skWe analyzed Mail09.centrum.sk page load time and found that the first response time was 481 ms and then it took 7 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
mail09.centrum.sk performance score
name
value
score
weighting
Value13.2 s
0/100
10%
Value19.1 s
0/100
25%
Value63.2 s
0/100
10%
Value83,110 ms
0/100
30%
Value0.183
66/100
15%
Value125.3 s
0/100
10%
481 ms
738 ms
738 ms
724 ms
735 ms
Our browser made a total of 250 requests to load all elements on the main page. We found that 0% of them (1 request) were addressed to the original Mail09.centrum.sk, 20% (51 requests) were made to Cdn.i0.cz and 13% (32 requests) were made to I0.cz. The less responsive or slowest element that took the longest time to load (2.2 sec) relates to the external source Cdn.i0.cz.
Page size can be reduced by 802.8 kB (44%)
1.8 MB
1.0 MB
In fact, the total size of Mail09.centrum.sk main page is 1.8 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. Javascripts take 955.1 kB which makes up the majority of the site volume.
Potential reduce by 110.1 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 110.1 kB or 78% of the original size.
Potential reduce by 30.7 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. Mail 09 Centrum images are well optimized though.
Potential reduce by 583.7 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 583.7 kB or 61% of the original size.
Potential reduce by 78.2 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. Mail09.centrum.sk needs all CSS files to be minified and compressed as it can save up to 78.2 kB or 88% of the original size.
Number of requests can be reduced by 129 (55%)
234
105
The browser has sent 234 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Mail 09 Centrum. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 61 to 1 for JavaScripts and as a result speed up the page load time.
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mail09.centrum.sk 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
[role]s do not have all required [aria-*] attributes
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Definition list items are not wrapped in <dl> elements
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
Form elements do not have associated labels
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.
mail09.centrum.sk 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
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
Issues were logged in the Issues panel in Chrome Devtools
mail09.centrum.sk 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
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 Mail09.centrum.sk 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 Mail09.centrum.sk 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.
mail09.centrum.sk
Open Graph description is not detected on the main page of Mail 09 Centrum. 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: