3.2 sec in total
464 ms
2.4 sec
284 ms
Welcome to o2.adsl.cz homepage info - get ready to check O2 Adsl best content for Czech Republic right away, or after learning these important things about o2.adsl.cz
Nabízíme O2 internet, O2 TV i O2 mobilní tarify za nejlepší ceny. Pomůžeme vám vybrat produkt podle vašich potřeb a poradíme vám, jak při objednávce ušetřit.
Visit o2.adsl.czWe analyzed O2.adsl.cz page load time and found that the first response time was 464 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
o2.adsl.cz performance score
name
value
score
weighting
Value1.7 s
92/100
10%
Value2.4 s
91/100
25%
Value5.3 s
59/100
10%
Value770 ms
38/100
30%
Value0.108
87/100
15%
Value10.8 s
22/100
10%
464 ms
112 ms
216 ms
234 ms
231 ms
Our browser made a total of 76 requests to load all elements on the main page. We found that 28% of them (21 requests) were addressed to the original O2.adsl.cz, 9% (7 requests) were made to Tpc.googlesyndication.com and 8% (6 requests) were made to C.betrad.com. The less responsive or slowest element that took the longest time to load (655 ms) relates to the external source Smartsuppchat.com.
Page size can be reduced by 657.6 kB (50%)
1.3 MB
657.1 kB
In fact, the total size of O2.adsl.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. 50% of websites need less resources to load. Javascripts take 934.7 kB which makes up the majority of the site volume.
Potential reduce by 19.5 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 19.5 kB or 77% of the original size.
Potential reduce by 10.7 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. O2 Adsl images are well optimized though.
Potential reduce by 576.0 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 576.0 kB or 62% of the original size.
Potential reduce by 51.4 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. O2.adsl.cz needs all CSS files to be minified and compressed as it can save up to 51.4 kB or 81% of the original size.
Number of requests can be reduced by 39 (54%)
72
33
The browser has sent 72 CSS, Javascripts, AJAX and image requests in order to completely render the main page of O2 Adsl. 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 as a result speed up the page load time.
o2.adsl.cz
464 ms
7fe636090695bbce73e854f4730c6147.css
112 ms
c87a2d1694cea85b5485015fe4be4c1c.js
216 ms
code
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code
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ee5170080a17b2693cc2d9b61c78fd4f.js
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retargeting.js
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conversion.js
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html.png
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gpt.js
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dc.js
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loader.js
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logo.png
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o2_banner_wide.jpg
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o2_banner_narrow.jpg
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bbnaut-lib-1.7.5.min.js
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pubads_impl_82.js
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unientdincemedium2.woff
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unientdinceblack.woff
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__utm.gif
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container.html
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adsbygoogle.js
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ca-pub-6381701148824224.js
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zrt_lookup.html
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show_ads_impl.js
55 ms
ads
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osd.js
6 ms
smartchat-2.1.1.min.css
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smartchat-2.1.1.min.js
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bootstrap.php
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ads
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footer.png
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abg.js
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m_js_controller.js
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surly.js
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2532.js
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box_19_top-right.png
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ci.png
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ads
295 ms
retargeting
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95 ms
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13727_list.jpg
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skeleton.js
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acq_fios_3x_80ActivationFeewaived_0_0_Static_1242015_728x90.jpg
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lidar.js
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sbhK2lTE.js
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cTrvNaRi.html
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skeleton.js
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o2.adsl.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.
o2.adsl.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
Page has valid source maps
o2.adsl.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
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 O2.adsl.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 O2.adsl.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.adsl.cz
Open Graph description is not detected on the main page of O2 Adsl. 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: