Tools & Wizards About Us
ceskatelevize.cz screenshot

Report Summary

  • 21

    Performance

    Renders faster than
    39% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 96

    SEO

    Google-friendlier than
    90% of websites

ceskatelevize.cz

Česká televize

Page Load Speed

4.9 sec in total

First Response

529 ms

Resources Loaded

3.7 sec

Page Rendered

712 ms

ceskatelevize.cz screenshot

About Website

Visit ceskatelevize.cz now to see the best up-to-date Ceska Televize content for Czech Republic and also check out these interesting facts you probably never knew about ceskatelevize.cz

Sledujte ČT on-line. Zpravodajství, publicistika, sport, počasí, pořady od A do Z. Programy ČT1, ČT2, ČT24, ČT sport a videoarchiv iVysílání. Česká veřejnoprávní televize.

Visit ceskatelevize.cz

Key Findings

We analyzed Ceskatelevize.cz page load time and found that the first response time was 529 ms and then it took 4.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

ceskatelevize.cz performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.0 s

4/100

10%

LCP (Largest Contentful Paint)

Value8.2 s

2/100

25%

SI (Speed Index)

Value10.1 s

9/100

10%

TBT (Total Blocking Time)

Value1,720 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value15.0 s

8/100

10%

Network Requests Diagram

www.ceskatelevize.cz

529 ms

basic.css

642 ms

basic-responsive.css

642 ms

navigation.css

652 ms

navigation-responsive.css

655 ms

Our browser made a total of 107 requests to load all elements on the main page. We found that 2% of them (2 requests) were addressed to the original Ceskatelevize.cz, 50% (53 requests) were made to Imgct.ceskatelevize.cz and 40% (43 requests) were made to Ctfs.ceskatelevize.cz. The less responsive or slowest element that took the longest time to load (954 ms) relates to the external source Imgct.ceskatelevize.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 97.7 kB (15%)

Content Size

668.5 kB

After Optimization

570.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ceskatelevize.cz main page is 668.5 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. 60% of websites need less resources to load. Images take 471.0 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 69.8 kB

  • Original 84.8 kB
  • After minification 82.2 kB
  • After compression 15.0 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 69.8 kB or 82% of the original size.

Image Optimization

-3%

Potential reduce by 13.3 kB

  • Original 471.0 kB
  • After minification 457.7 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. Ceska Televize images are well optimized though.

JavaScript Optimization

-8%

Potential reduce by 7.1 kB

  • Original 90.5 kB
  • After minification 90.5 kB
  • After compression 83.4 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. This website has mostly compressed JavaScripts.

CSS Optimization

-34%

Potential reduce by 7.5 kB

  • Original 22.2 kB
  • After minification 22.2 kB
  • After compression 14.7 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. Ceskatelevize.cz needs all CSS files to be minified and compressed as it can save up to 7.5 kB or 34% of the original size.

Requests Breakdown

Number of requests can be reduced by 51 (50%)

Requests Now

102

After Optimization

51

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 102 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ceska Televize. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.ceskatelevize.cz

www.ceskatelevize.cz

529 ms

basic.css

basic.css

642 ms

basic-responsive.css

basic-responsive.css

642 ms

navigation.css

navigation.css

652 ms

navigation-responsive.css

navigation-responsive.css

655 ms

panels.css

panels.css

655 ms

live-programmes.css

live-programmes.css

657 ms

icast-tips.css

icast-tips.css

742 ms

trailers.css

trailers.css

744 ms

common.css

common.css

812 ms

footer.css

footer.css

830 ms

header.css

header.css

833 ms

footer.js

footer.js

835 ms

header.js

header.js

836 ms

variables.js

variables.js

199 ms

jquery.min.js

jquery.min.js

18 ms

modernizr.custom.js

modernizr.custom.js

751 ms

global.js

global.js

753 ms

navigation.js

navigation.js

752 ms

cmp.js

cmp.js

906 ms

jquery-ui-1.10.0.custom.min.js

jquery-ui-1.10.0.custom.min.js

752 ms

jquery.ellipsis.min.js

jquery.ellipsis.min.js

842 ms

matchMedia.js

matchMedia.js

843 ms

matchMedia.addListener.js

matchMedia.addListener.js

853 ms

images.js

images.js

853 ms

picturefill.js

picturefill.js

854 ms

swipe.js

swipe.js

855 ms

panels.js

panels.js

951 ms

live-programmes.js

live-programmes.js

951 ms

icast-tips.js

icast-tips.js

954 ms

analytics.js

analytics.js

930 ms

fonts.css

fonts.css

117 ms

gtm.js

gtm.js

130 ms

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Ceska_televize_logo_onDark.cf4bee6eae50783dd898d45ac03b0bc6.svg

102 ms

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152 ms

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158 ms

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157 ms

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156 ms

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152 ms

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271 ms

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297 ms

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303 ms

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304 ms

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300 ms

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306 ms

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506 ms

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503 ms

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504 ms

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502 ms

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500 ms

youtube.18a09babf34f011369671fea53574285.svg

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498 ms

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517 ms

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518 ms

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515 ms

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519 ms

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519 ms

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515 ms

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threadsHover.dd323dfd4ba55509dc5fe899bf009fd9.svg

618 ms

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ivysilani_onDark.ab6917666b20cb702da012b12652cb96.svg

615 ms

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614 ms

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616 ms

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613 ms

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608 ms

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707 ms

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wrapper-panels.png

155 ms

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499 ms

uni.jpg

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493 ms

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497 ms

play-arrow.svg

play-arrow.svg

501 ms

uni.jpg

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510 ms

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513 ms

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513 ms

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510 ms

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618 ms

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616 ms

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616 ms

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614 ms

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764 ms

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228 ms

p43emkm7.json

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76 ms

runtime.abcd9a9.js

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141 ms

Accessibility Review

ceskatelevize.cz accessibility score

83

Accessibility Issues

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

High

[aria-*] attributes do not match their roles

High

ARIA IDs are not unique

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Best Practices

ceskatelevize.cz best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

ceskatelevize.cz SEO score

96

Search Engine Optimization Advices

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

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 Ceskatelevize.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 Ceskatelevize.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

ceskatelevize.cz

Open Graph description is not detected on the main page of Ceska Televize. 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: