Tools & Wizards About Us
radiokomunikace.cz screenshot

Report Summary

  • 28

    Performance

    Renders faster than
    48% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

radiokomunikace.cz

Datové centrum, přenos dat, Cloud a IoT | České Radiokomunikace

Page Load Speed

4.2 sec in total

First Response

410 ms

Resources Loaded

2.7 sec

Page Rendered

1.1 sec

radiokomunikace.cz screenshot

About Website

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

Jsme poskytovatelem unikátní televizní, rozhlasové a internetové infrastruktury. Převádíme technologické trendy do inovativních mediálních, telekomunikačních a IT infrastrukturních služeb.

Visit radiokomunikace.cz

Key Findings

We analyzed Radiokomunikace.cz page load time and found that the first response time was 410 ms and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

radiokomunikace.cz performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

49/100

10%

LCP (Largest Contentful Paint)

Value6.2 s

11/100

25%

SI (Speed Index)

Value7.4 s

28/100

10%

TBT (Total Blocking Time)

Value1,830 ms

9/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value18.1 s

3/100

10%

Network Requests Diagram

radiokomunikace.cz

410 ms

www.cra.cz

577 ms

uc.js

22 ms

cz-default.css

295 ms

cz-translations.js

392 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Radiokomunikace.cz, 45% (17 requests) were made to Cra.cz and 8% (3 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source Cra.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 167.6 kB (26%)

Content Size

635.1 kB

After Optimization

467.5 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Radiokomunikace.cz main page is 635.1 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 461.3 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 79.1 kB

  • Original 92.0 kB
  • After minification 72.7 kB
  • After compression 12.9 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. This page needs HTML code to be minified as it can gain 19.3 kB, which is 21% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 79.1 kB or 86% of the original size.

JavaScript Optimization

-19%

Potential reduce by 88.4 kB

  • Original 461.3 kB
  • After minification 461.3 kB
  • After compression 372.9 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 88.4 kB or 19% of the original size.

CSS Optimization

-0%

Potential reduce by 92 B

  • Original 81.8 kB
  • After minification 81.8 kB
  • After compression 81.7 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. Radiokomunikace.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 15 (58%)

Requests Now

26

After Optimization

11

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 26 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Radiokomunikace. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

radiokomunikace.cz

radiokomunikace.cz

410 ms

www.cra.cz

www.cra.cz

577 ms

uc.js

uc.js

22 ms

cz-default.css

cz-default.css

295 ms

cz-translations.js

cz-translations.js

392 ms

cz-footerFiles.js

cz-footerFiles.js

1117 ms

homepage-hero2(2).webp

homepage-hero2(2).webp

195 ms

homepage-hero-three.webp

homepage-hero-three.webp

434 ms

lazy_image_placeholder.svg

lazy_image_placeholder.svg

435 ms

logo-cra.svg

logo-cra.svg

434 ms

x-twitter.svg

x-twitter.svg

437 ms

main-bg.svg

main-bg.svg

632 ms

Nunito-Bold.woff

Nunito-Bold.woff

584 ms

Nunito-SemiBold.woff

Nunito-SemiBold.woff

588 ms

Nunito-Regular.woff

Nunito-Regular.woff

741 ms

fa-solid-900.ttf

fa-solid-900.ttf

1312 ms

fa-regular-400.ttf

fa-regular-400.ttf

1066 ms

fa-light-300.ttf

fa-light-300.ttf

1307 ms

gtm.js

gtm.js

74 ms

fa-brands-400.ttf

fa-brands-400.ttf

933 ms

js

js

67 ms

analytics.js

analytics.js

44 ms

destination

destination

259 ms

hotjar-3215273.js

hotjar-3215273.js

258 ms

log.js

log.js

683 ms

L.js

L.js

704 ms

fbevents.js

fbevents.js

215 ms

insight.min.js

insight.min.js

252 ms

d2upeuicpi

d2upeuicpi

288 ms

rc.js

rc.js

889 ms

7497.js

7497.js

282 ms

collect

collect

203 ms

collect

collect

63 ms

modules.3b9efc26f753310c2bd8.js

modules.3b9efc26f753310c2bd8.js

44 ms

insight_tag_errors.gif

insight_tag_errors.gif

108 ms

clarity.js

clarity.js

25 ms

ga-audiences

ga-audiences

41 ms

c.gif

c.gif

7 ms

Accessibility Review

radiokomunikace.cz accessibility score

94

Accessibility Issues

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

radiokomunikace.cz best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

radiokomunikace.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 Radiokomunikace.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 Radiokomunikace.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

radiokomunikace.cz

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