Report Summary

  • 15

    Performance

    Renders faster than
    34% of other websites

  • 62

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    28% of websites

  • 46

    SEO

    Google-friendlier than
    28% of websites

digitalnitelevize.cz

DigitálníTelevize.cz - digitální televize, digitální vysílání, dvb-t

Page Load Speed

4.2 sec in total

First Response

336 ms

Resources Loaded

3.5 sec

Page Rendered

440 ms

digitalnitelevize.cz screenshot

About Website

Click here to check amazing Digitalni Televize content for Czech Republic. Otherwise, check out these important facts you probably never knew about digitalnitelevize.cz

Zpravodajský server s aktuálními novinky ze světa digitálních televizí. Všechny informace o DVB-T a DVB-T2 na jednom místě.

Visit digitalnitelevize.cz

Key Findings

We analyzed Digitalnitelevize.cz page load time and found that the first response time was 336 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

digitalnitelevize.cz performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.0 s

0/100

10%

LCP (Largest Contentful Paint)

Value24.5 s

0/100

25%

SI (Speed Index)

Value15.6 s

0/100

10%

TBT (Total Blocking Time)

Value1,920 ms

8/100

30%

CLS (Cumulative Layout Shift)

Value0.118

85/100

15%

TTI (Time to Interactive)

Value24.3 s

0/100

10%

Network Requests Diagram

digitalnitelevize.cz

336 ms

www.digitalnitelevize.cz

533 ms

styles.css

148 ms

jquery-ui.css

4 ms

jquery-1.8.3.js

10 ms

Our browser made a total of 56 requests to load all elements on the main page. We found that 54% of them (30 requests) were addressed to the original Digitalnitelevize.cz, 9% (5 requests) were made to Code.jquery.com and 9% (5 requests) were made to Owpcms.cz. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Digitalnitelevize.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 808.9 kB (62%)

Content Size

1.3 MB

After Optimization

496.1 kB

In fact, the total size of Digitalnitelevize.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. 50% of websites need less resources to load. Javascripts take 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 56.9 kB

  • Original 69.1 kB
  • After minification 61.3 kB
  • After compression 12.2 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 7.8 kB, which is 11% 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 56.9 kB or 82% of the original size.

Image Optimization

-12%

Potential reduce by 21.8 kB

  • Original 179.5 kB
  • After minification 157.7 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. Obviously, Digitalni Televize needs image optimization as it can save up to 21.8 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-68%

Potential reduce by 692.9 kB

  • Original 1.0 MB
  • After minification 1.0 MB
  • After compression 319.4 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 692.9 kB or 68% of the original size.

CSS Optimization

-85%

Potential reduce by 37.3 kB

  • Original 44.1 kB
  • After minification 33.9 kB
  • After compression 6.8 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. Digitalnitelevize.cz needs all CSS files to be minified and compressed as it can save up to 37.3 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 22 (41%)

Requests Now

54

After Optimization

32

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Digitalni 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 15 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

digitalnitelevize.cz accessibility score

62

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 progressbar elements do not have accessible names.

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.

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

digitalnitelevize.cz best practices score

50

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

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

digitalnitelevize.cz SEO score

46

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

High

Page is blocked from indexing

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    CS

  • Language Claimed

    N/A

  • Encoding

    WINDOWS-1250

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Digitalnitelevize.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 Digitalnitelevize.cz main page’s claimed encoding is windows-1250. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

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