Tools & Wizards About Us
radiotv.cz screenshot

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

radiotv.cz

RadioTV - RadioTV - co se děje v médiích

Page Load Speed

8.6 sec in total

First Response

442 ms

Resources Loaded

7.6 sec

Page Rendered

493 ms

radiotv.cz screenshot

About Website

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

Zpravodajství ze světa médií - rádia, televize, digitální vysílání.

Visit radiotv.cz

Key Findings

We analyzed Radiotv.cz page load time and found that the first response time was 442 ms and then it took 8.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

radiotv.cz performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.2 s

0/100

10%

LCP (Largest Contentful Paint)

Value9.5 s

0/100

25%

SI (Speed Index)

Value12.6 s

3/100

10%

TBT (Total Blocking Time)

Value11,230 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.007

100/100

15%

TTI (Time to Interactive)

Value25.2 s

0/100

10%

Network Requests Diagram

radiotv.cz

442 ms

www.radiotv.cz

2129 ms

jquery-1.3.2.min.js

315 ms

jquery-ui-1.7.custom.min.js

223 ms

step4.css

235 ms

Our browser made a total of 182 requests to load all elements on the main page. We found that 42% of them (76 requests) were addressed to the original Radiotv.cz, 12% (22 requests) were made to Pixel.rubiconproject.com and 5% (10 requests) were made to Static.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Radiotv.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 636.7 kB (51%)

Content Size

1.3 MB

After Optimization

613.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Radiotv.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. 65% of websites need less resources to load. Javascripts take 635.9 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 96.6 kB

  • Original 117.0 kB
  • After minification 111.1 kB
  • After compression 20.4 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 96.6 kB or 83% of the original size.

Image Optimization

-8%

Potential reduce by 27.3 kB

  • Original 352.6 kB
  • After minification 325.3 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. RadioTV images are well optimized though.

JavaScript Optimization

-63%

Potential reduce by 403.3 kB

  • Original 635.9 kB
  • After minification 624.7 kB
  • After compression 232.5 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 403.3 kB or 63% of the original size.

CSS Optimization

-76%

Potential reduce by 109.5 kB

  • Original 144.7 kB
  • After minification 112.0 kB
  • After compression 35.2 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. Radiotv.cz needs all CSS files to be minified and compressed as it can save up to 109.5 kB or 76% of the original size.

Requests Breakdown

Number of requests can be reduced by 105 (63%)

Requests Now

166

After Optimization

61

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 166 CSS, Javascripts, AJAX and image requests in order to completely render the main page of RadioTV. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 60 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

radiotv.cz

radiotv.cz

442 ms

www.radiotv.cz

www.radiotv.cz

2129 ms

jquery-1.3.2.min.js

jquery-1.3.2.min.js

315 ms

jquery-ui-1.7.custom.min.js

jquery-ui-1.7.custom.min.js

223 ms

step4.css

step4.css

235 ms

modernizr.js

modernizr.js

240 ms

main.js

main.js

242 ms

jquery.min.js

jquery.min.js

41 ms

jquery.min.js

jquery.min.js

54 ms

tracking.js

tracking.js

244 ms

css_browser_selector.js

css_browser_selector.js

353 ms

facebook-like-responsive.css

facebook-like-responsive.css

361 ms

css-front.css

css-front.css

362 ms

style.css

style.css

363 ms

css

css

49 ms

style.css

style.css

362 ms

default.min.css

default.min.css

415 ms

mediaelementplayer.css

mediaelementplayer.css

436 ms

default.css

default.css

463 ms

jquery.js

jquery.js

712 ms

jquery-migrate.min.js

jquery-migrate.min.js

489 ms

mediaelement-and-player.min.js

mediaelement-and-player.min.js

604 ms

microkids-related-posts-default.css

microkids-related-posts-default.css

520 ms

style.css

style.css

545 ms

script.js

script.js

579 ms

respond.src.js

respond.src.js

613 ms

respond.min.js

respond.min.js

625 ms

plusone.js

plusone.js

90 ms

jquery-1.7.1.min.js

jquery-1.7.1.min.js

870 ms

jquery.pageslide.min.js

jquery.pageslide.min.js

695 ms

core.min.js

core.min.js

636 ms

widget.min.js

widget.min.js

646 ms

mouse.min.js

mouse.min.js

639 ms

resizable.min.js

resizable.min.js

725 ms

draggable.min.js

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740 ms

button.min.js

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757 ms

position.min.js

position.min.js

745 ms

dialog.min.js

dialog.min.js

768 ms

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841 ms

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858 ms

default.js

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852 ms

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263 ms

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618 ms

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561 ms

rstyle.css

rstyle.css

749 ms

ga.js

ga.js

83 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

24 ms

midlog.png

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130 ms

blank.png

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130 ms

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131 ms

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131 ms

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132 ms

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319 ms

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351 ms

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240 ms

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246 ms

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248 ms

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333 ms

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361 ms

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369 ms

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366 ms

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530 ms

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550 ms

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472 ms

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cesky-rozhlas-jan-pokorny-651-240x180.jpg

479 ms

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satelit-cerny-651-240x180.jpg

483 ms

amc-night-manager-1-240x180.jpg

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490 ms

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MTMwOTVub2ludGVybmV0LXJla2xhbWEtNjUx.jpg

585 ms

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599 ms

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601 ms

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612 ms

rss.png

rss.png

637 ms

logomss.png

logomss.png

659 ms

all.js

all.js

269 ms

topbg.png

topbg.png

688 ms

logo.png

logo.png

704 ms

homecur.png

homecur.png

703 ms

widtitbg.png

widtitbg.png

719 ms

foto.png

foto.png

726 ms

media.png

media.png

755 ms

footbg.png

footbg.png

805 ms

li.png

li.png

829 ms

gyre-reg.woff

gyre-reg.woff

749 ms

__utm.gif

__utm.gif

14 ms

gyre-bold.woff

gyre-bold.woff

852 ms

xgemius.js

xgemius.js

304 ms

bbnaut-lib-1.7.5.min.js

bbnaut-lib-1.7.5.min.js

328 ms

176 ms

xd_arbiter.php

xd_arbiter.php

212 ms

xd_arbiter.php

xd_arbiter.php

415 ms

fpdata.js

fpdata.js

97 ms

lsget.html

lsget.html

252 ms

309 ms

10900.js

10900.js

103 ms

rexdot.js

rexdot.js

96 ms

sync

sync

20 ms

330544-2.js

330544-2.js

169 ms

sync

sync

10 ms

329470-2.js

329470-2.js

159 ms

318 ms

show_ads.js

show_ads.js

7 ms

zrt_lookup.html

zrt_lookup.html

26 ms

show_ads_impl.js

show_ads_impl.js

46 ms

ads

ads

237 ms

emily.html

emily.html

28 ms

osd.js

osd.js

32 ms

emily.html

emily.html

41 ms

emily.html

emily.html

16 ms

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emily.html

14 ms

sync

sync

16 ms

330546-15.js

330546-15.js

171 ms

tap.php

tap.php

7 ms

sync

sync

14 ms

329472-15.js

329472-15.js

174 ms

236 ms

pixel.htm

pixel.htm

131 ms

channels.js

channels.js

129 ms

cms-2c-rubicon.html

cms-2c-rubicon.html

124 ms

ping

ping

125 ms

co

co

253 ms

tap.php

tap.php

112 ms

ddc.htm

ddc.htm

35 ms

ping_match.gif

ping_match.gif

23 ms

rc

rc

55 ms

rubicon

rubicon

32 ms

rubicon.ashx

rubicon.ashx

115 ms

pixel

pixel

43 ms

cm

cm

25 ms

rubicon

rubicon

30 ms

rbcn

rbcn

29 ms

cs

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183 ms

rc

rc

89 ms

cse

cse

141 ms

redirect

redirect

89 ms

199 ms

tap.php

tap.php

53 ms

tap.php

tap.php

73 ms

check

check

21 ms

tap.php

tap.php

69 ms

tap.php

tap.php

64 ms

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64 ms

pixel

pixel

90 ms

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60 ms

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69 ms

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65 ms

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38 ms

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like_box.php

like_box.php

158 ms

tap.php

tap.php

32 ms

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tap.php

29 ms

sd

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15 ms

match-result

match-result

41 ms

tap.php

tap.php

26 ms

rs

rs

5 ms

cc

cc

77 ms

n7IAcY2jJIh.css

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282 ms

n--mLoVmLJM.css

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349 ms

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485 ms

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615 ms

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506 ms

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516 ms

tap.php

tap.php

13 ms

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17 ms

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347 ms

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549 ms

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546 ms

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71 ms

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69 ms

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72 ms

Accessibility Review

radiotv.cz accessibility score

69

Accessibility Issues

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.

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 IDs are not unique

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

High

<frame> or <iframe> elements do not have a title

High

Form elements do not have associated labels

High

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

radiotv.cz best practices score

58

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

radiotv.cz SEO score

100

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

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 Radiotv.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 Radiotv.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

radiotv.cz

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