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Welcome to zvoneni.o2active.cz homepage info - get ready to check Zvoneni O2 Active best content for Czech Republic right away, or after learning these important things about zvoneni.o2active.cz
Bestsellery a novinky ihned ke stažení. Krimi, romance i pohádky ve slevě. Poslech a čtení přímo v aplikaci nebo odesláním do čtečky.
Visit zvoneni.o2active.czWe analyzed Zvoneni.o2active.cz page load time and found that the first response time was 2.2 sec and then it took 12 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
zvoneni.o2active.cz performance score
name
value
score
weighting
Value6.0 s
4/100
10%
Value14.1 s
0/100
25%
Value10.7 s
7/100
10%
Value3,510 ms
1/100
30%
Value0.126
83/100
15%
Value11.6 s
18/100
10%
2211 ms
634 ms
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Our browser made a total of 150 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Zvoneni.o2active.cz, 48% (72 requests) were made to O2active.cz and 13% (20 requests) were made to Img1.o2active.cz. The less responsive or slowest element that took the longest time to load (5.5 sec) relates to the external source Img3.o2active.cz.
Page size can be reduced by 1.6 MB (57%)
2.9 MB
1.2 MB
In fact, the total size of Zvoneni.o2active.cz main page is 2.9 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. 30% of websites need less resources to load. Images take 2.2 MB which makes up the majority of the site volume.
Potential reduce by 242.4 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 68.9 kB, which is 26% 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 242.4 kB or 92% of the original size.
Potential reduce by 1.0 MB
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, Zvoneni O2 Active needs image optimization as it can save up to 1.0 MB or 49% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 177.7 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 177.7 kB or 70% of the original size.
Potential reduce by 169.8 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. Zvoneni.o2active.cz needs all CSS files to be minified and compressed as it can save up to 169.8 kB or 84% of the original size.
Number of requests can be reduced by 44 (31%)
141
97
The browser has sent 141 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zvoneni O2 Active. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and as a result speed up the page load time.
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zvoneni.o2active.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
Links do not have a discernible name
zvoneni.o2active.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
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
zvoneni.o2active.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 Zvoneni.o2active.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 Zvoneni.o2active.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.
zvoneni.o2active.cz
Open Graph description is not detected on the main page of Zvoneni O2 Active. 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: