O2.cz Site Title
O2 | Volání, internet, televize a balíčky O2 Spolu
O2.cz Meta Description
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.
O2.cz Test Results
o2.cz Mobile Usability: 99/100
Quick overview:
Size tap targets appropriately
Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.
The tap target
<button type="button" class="slick-prev sli…slick-disabled">Previous</button> and 4 others are close to other tap targets.
...
o2.cz Mobile Speed: 51/100
Quick overview:
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 3 blocking script resources and 5 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
https://www.o2.cz/ga-set/persoo.js
...
Optimize CSS Delivery of the following:
https://www.o2.cz/_stat/181526-1-PUBLIC/resources/313140-font_face.css?_linkv=1496267447492
...
Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 394.1KiB (49% reduction).
Compressing https://i.scdn.co/image/24b1591bc4ecc8fe201465a9c1bf1af96c93224d could save 40.7KiB (34% reduction).
...
Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://o2.cz/
...
Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://api2.vivtracking.com/PageView (expiration not specified)
...
Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 3.5KiB (59% reduction).
Compressing https://o2.vivtracking.com/vivtracking.min.js could save 2.8KiB (64% reduction).
...
Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 2.3KiB (11% reduction).
Minifying https://www.o2.cz/_stat/181526-1-PUBLIC/resources/370009-design_august_2014_homepage.css?_linkv=1496267447492 could save 1.6KiB (11% reduction) after compression.
...
Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 836B (18% reduction).
Minifying https://persoo-o2-310448.c.cdn77.org/g26dpqsd9ulpv37rhnobiu23/p/actions.js could save 836B (18% reduction) after compression.
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