7.3 sec in total
368 ms
6.3 sec
615 ms
Click here to check amazing M O2 content for Czech Republic. Otherwise, check out these important facts you probably never knew about m.o2.cz
Dopřejte si to nejlepší: neomezené volání, rychlý internet, internetová O2 TV nebo výhodný balíček služeb O2 Spolu. Vše online i v aplikaci Moje O2.
Visit m.o2.czWe analyzed M.o2.cz page load time and found that the first response time was 368 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.
m.o2.cz performance score
name
value
score
weighting
Value6.4 s
2/100
10%
Value22.9 s
0/100
25%
Value30.0 s
0/100
10%
Value26,060 ms
0/100
30%
Value0
100/100
15%
Value43.5 s
0/100
10%
368 ms
553 ms
277 ms
305 ms
610 ms
Our browser made a total of 156 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original M.o2.cz, 11% (17 requests) were made to Static.xx.fbcdn.net and 9% (14 requests) were made to Scontent.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (3.2 sec) relates to the external source O2.cz.
Page size can be reduced by 1.4 MB (38%)
3.8 MB
2.4 MB
In fact, the total size of M.o2.cz main page is 3.8 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. 70% of websites need less resources to load. Images take 2.4 MB which makes up the majority of the site volume.
Potential reduce by 52.4 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. 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 52.4 kB or 71% of the original size.
Potential reduce by 350.1 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, M O2 needs image optimization as it can save up to 350.1 kB or 15% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 600.3 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 600.3 kB or 75% of the original size.
Potential reduce by 439.6 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. M.o2.cz needs all CSS files to be minified and compressed as it can save up to 439.6 kB or 77% of the original size.
Number of requests can be reduced by 71 (47%)
150
79
The browser has sent 150 CSS, Javascripts, AJAX and image requests in order to completely render the main page of M O2. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 34 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.
www.o2.cz
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m.o2.cz 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
[aria-*] attributes do not match their roles
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
m.o2.cz 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
Page has valid source maps
m.o2.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
Tap targets are not sized appropriately
CS
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise M.o2.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 M.o2.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.
m.o2.cz
Open Graph data is detected on the main page of M O2. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: