Tools & Wizards About Us

Report Summary

  • 20

    Performance

    Renders faster than
    37% of other websites

  • 57

    Accessibility

    Visual factors better than
    that of 24% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

wienerberger.cz

Stavební materiál pro váš dům | Zdivo, střecha, fasáda, dlažba

Page Load Speed

5.2 sec in total

First Response

401 ms

Resources Loaded

4.6 sec

Page Rendered

230 ms

About Website

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

Stavební materiál pro váš dům. Společnost Wienerberger - výrobce cihel Porotherm, střešních tašek Tondach, lícových cihel a obkladových pásek Terca, betonové dlažby Semmelrock a cihlové dlažby Penter.

Visit wienerberger.cz

Key Findings

We analyzed Wienerberger.cz page load time and found that the first response time was 401 ms and then it took 4.8 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

wienerberger.cz performance score

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

22/100

10%

LCP (Largest Contentful Paint)

Value11.7 s

0/100

25%

SI (Speed Index)

Value12.1 s

3/100

10%

TBT (Total Blocking Time)

Value2,090 ms

7/100

30%

CLS (Cumulative Layout Shift)

Value0.041

99/100

15%

TTI (Time to Interactive)

Value19.0 s

3/100

10%

Network Requests Diagram

wienerberger.cz

401 ms

www.wienerberger.cz

454 ms

style.css

213 ms

design2013.css

321 ms

jquery.1.11.0.min.js

533 ms

Our browser made a total of 95 requests to load all elements on the main page. We found that 92% of them (87 requests) were addressed to the original Wienerberger.cz, 2% (2 requests) were made to C.imedia.cz and 1% (1 request) were made to E.issuu.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Wienerberger.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (42%)

Content Size

2.6 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Wienerberger.cz main page is 2.6 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. 45% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 40.5 kB

  • Original 51.2 kB
  • After minification 39.1 kB
  • After compression 10.6 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 12.1 kB, which is 24% 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 40.5 kB or 79% of the original size.

Image Optimization

-4%

Potential reduce by 42.9 kB

  • Original 1.2 MB
  • After minification 1.1 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. Wienerberger images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 761.3 kB

  • Original 1.1 MB
  • After minification 955.1 kB
  • After compression 320.6 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 761.3 kB or 70% of the original size.

CSS Optimization

-83%

Potential reduce by 243.7 kB

  • Original 291.9 kB
  • After minification 235.7 kB
  • After compression 48.2 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. Wienerberger.cz needs all CSS files to be minified and compressed as it can save up to 243.7 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 68 (74%)

Requests Now

92

After Optimization

24

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 92 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Wienerberger. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 33 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

wienerberger.cz accessibility score

57

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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.

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

wienerberger.cz best practices score

83

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

Missing source maps for large first-party JavaScript

SEO Factors

wienerberger.cz SEO score

85

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

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

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 Wienerberger.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 Wienerberger.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

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