Tools & Wizards About Us
casradio.cz screenshot

Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 67% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 89

    SEO

    Google-friendlier than
    67% of websites

casradio.cz

Radio Čas | HRAJEME MEGAHITY

Page Load Speed

9.4 sec in total

First Response

641 ms

Resources Loaded

8.4 sec

Page Rendered

347 ms

casradio.cz screenshot

About Website

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

Radio Čas: HRAJEME MEGAHITY

Visit casradio.cz

Key Findings

We analyzed Casradio.cz page load time and found that the first response time was 641 ms and then it took 8.8 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

casradio.cz performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

9/100

10%

LCP (Largest Contentful Paint)

Value22.1 s

0/100

25%

SI (Speed Index)

Value13.8 s

1/100

10%

TBT (Total Blocking Time)

Value970 ms

28/100

30%

CLS (Cumulative Layout Shift)

Value2.629

0/100

15%

TTI (Time to Interactive)

Value34.1 s

0/100

10%

Network Requests Diagram

casradio.cz

641 ms

wp-emoji-release.min.js

229 ms

css

54 ms

style.css

357 ms

styles.css

366 ms

Our browser made a total of 305 requests to load all elements on the main page. We found that 79% of them (242 requests) were addressed to the original Casradio.cz, 8% (24 requests) were made to Scontent.xx.fbcdn.net and 7% (21 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 Casradio.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.7 MB (11%)

Content Size

16.2 MB

After Optimization

14.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Casradio.cz main page is 16.2 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. 85% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 15.4 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 159.4 kB

  • Original 187.3 kB
  • After minification 179.4 kB
  • After compression 27.9 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. 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 159.4 kB or 85% of the original size.

Image Optimization

-8%

Potential reduce by 1.2 MB

  • Original 15.4 MB
  • After minification 14.2 MB

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. Cas Radio images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 209.9 kB

  • Original 312.4 kB
  • After minification 266.0 kB
  • After compression 102.5 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 209.9 kB or 67% of the original size.

CSS Optimization

-77%

Potential reduce by 208.0 kB

  • Original 269.6 kB
  • After minification 264.0 kB
  • After compression 61.7 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. Casradio.cz needs all CSS files to be minified and compressed as it can save up to 208.0 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 54 (18%)

Requests Now

301

After Optimization

247

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 301 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cas Radio. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 38 to 1 for JavaScripts and from 18 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

casradio.cz

casradio.cz

641 ms

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229 ms

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54 ms

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357 ms

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651 ms

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662 ms

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670 ms

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717 ms

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722 ms

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738 ms

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738 ms

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742 ms

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759 ms

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736 ms

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733 ms

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735 ms

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745 ms

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759 ms

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734 ms

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731 ms

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733 ms

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732 ms

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743 ms

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762 ms

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737 ms

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735 ms

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733 ms

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746 ms

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740 ms

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737 ms

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729 ms

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767 ms

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735 ms

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Accessibility Review

casradio.cz accessibility score

87

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Links do not have a discernible name

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

casradio.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

casradio.cz SEO score

89

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Casradio.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Casradio.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

casradio.cz

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