3.8 sec in total
359 ms
2.5 sec
973 ms
Visit o2-tv.cz now to see the best up-to-date O2 Tv content and also check out these interesting facts you probably never knew about o2-tv.cz
O2 nabízí výhodné volání, široké pokrytí i rychlost internetu a další telekomunikační služby. Jejich kombinací i nákupem on-line ušetříte, spojte si služby v O2 Spolu. Zařiďte vše v aplikaci Moje O2.
Visit o2-tv.czWe analyzed O2-tv.cz page load time and found that the first response time was 359 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
o2-tv.cz performance score
name
value
score
weighting
Value7.7 s
0/100
10%
Value21.4 s
0/100
25%
Value20.8 s
0/100
10%
Value1,120 ms
23/100
30%
Value0.125
83/100
15%
Value26.2 s
0/100
10%
359 ms
476 ms
270 ms
323 ms
226 ms
Our browser made a total of 62 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original O2-tv.cz, 81% (50 requests) were made to O2tv.cz and 5% (3 requests) were made to Assets.adobedtm.com. The less responsive or slowest element that took the longest time to load (1 sec) relates to the external source O2tv.cz.
Page size can be reduced by 178.9 kB (23%)
786.9 kB
608.0 kB
In fact, the total size of O2-tv.cz main page is 786.9 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 50% of websites need less resources to load. Images take 558.6 kB which makes up the majority of the site volume.
Potential reduce by 17.6 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 17.6 kB or 71% of the original size.
Potential reduce by 29.5 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. O2 Tv images are well optimized though.
Potential reduce by 131.8 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 131.8 kB or 65% of the original size.
Number of requests can be reduced by 27 (50%)
54
27
The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of O2 Tv. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 28 to 1 for JavaScripts and as a result speed up the page load time.
o2-tv.cz
359 ms
www.o2tv.cz
476 ms
ad3484747525db1c08357604f71bf390-main.min.css
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db2cccefedcc741a45a582e91a5afe8d-jquery-1.7.1.min.js
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015edee1db22c137ab4bac928965cae1-et-modal-dialog-0.1.0.min.js
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e2939dcc328fd107fe50e86b81f030da-Silverlight.min.js
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a8e239f945cbae9a8c9d20795de72250-bootstrap-datepicker.min.js
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7658757f3908f59389898e30f4de4067-jquery.bxslider.min.js
572 ms
39276dc5add8a3dbe3de9c276356a558-app_def.min.js
598 ms
satellite-565cb09a64746d270a001b1b.js
21 ms
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o2-tv.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
Image elements do not have [alt] attributes
Links do not have a discernible name
o2-tv.cz best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
o2-tv.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
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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise O2-tv.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 O2-tv.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.
o2-tv.cz
Open Graph description is not detected on the main page of O2 Tv. 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: