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About Website

Welcome to ct.cz homepage info - get ready to check Ct best content for Czech Republic right away, or after learning these important things about ct.cz

Pořiďte si funkcemi nabitou digitální televizi O2 TV. Filmy i seriály HBO nebo Voyo, FORTUNA LIGA, nejzábavnější pořady pro děti. Sledujte přes internet i v televizi.

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name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

26/100

10%

LCP (Largest Contentful Paint)

Value10.6 s

0/100

25%

SI (Speed Index)

Value8.8 s

15/100

10%

TBT (Total Blocking Time)

Value1,090 ms

24/100

30%

CLS (Cumulative Layout Shift)

Value0.129

82/100

15%

TTI (Time to Interactive)

Value19.9 s

2/100

10%

ct.cz

294 ms

televize

1239 ms

index.scss

868 ms

index.js

69 ms

launch-EN01534af7e30646e8b078ac64dc75500b.min.js

21 ms

Our browser made a total of 50 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Ct.cz, 66% (33 requests) were made to O2.cz and 10% (5 requests) were made to S.o2.cz. The less responsive or slowest element that took the longest time to load (2.1 sec) relates to the external source O2.cz.

Content Size

982.9 kB

After Optimization

598.5 kB

In fact, the total size of Ct.cz main page is 982.9 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. 35% of websites need less resources to load. Javascripts take 449.4 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 171.8 kB

Original 223.8 kB
After minification 217.0 kB
After compression 52.0 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 171.8 kB or 77% of the original size.

Image Optimization

-7%

Potential reduce by 16.3 kB

Original 232.9 kB
After minification 216.6 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. Ct images are well optimized though.

JavaScript Optimization

-44%

Potential reduce by 195.9 kB

Original 449.4 kB
After minification 449.3 kB
After compression 253.5 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 195.9 kB or 44% of the original size.

CSS Optimization

-1%

Potential reduce by 404 B

Original 76.8 kB
After minification 76.8 kB
After compression 76.4 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. Ct.cz has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ct. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and as a result speed up the page load time.

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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/).

High

Document uses legible font sizes

Language and Encoding

Language Detected

CS
Language Claimed

CS
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ct.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 Ct.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.

Social Sharing Optimization

ct.cz

Open Graph data is detected on the main page of Ct. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook:

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Performance

Accessibility

Best Practices

SEO

O2 | Digitální televize O2 TV | Sport, filmy i seriály online

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)