Report Summary

  • 57

    Performance

    Renders faster than
    73% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 86% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    47% of websites

  • 91

    SEO

    Google-friendlier than
    76% of websites

pvk.cz

Pražské vodovody a kanalizace, a.s. - Pražské vodovody a kanalizace, a.s.

Page Load Speed

4.7 sec in total

First Response

334 ms

Resources Loaded

4.1 sec

Page Rendered

224 ms

pvk.cz screenshot

About Website

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

Pražské vodovody a kanalizace, a.s.

Visit pvk.cz

Key Findings

We analyzed Pvk.cz page load time and found that the first response time was 334 ms and then it took 4.3 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

pvk.cz performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.5 s

6/100

10%

LCP (Largest Contentful Paint)

Value6.6 s

8/100

25%

SI (Speed Index)

Value6.7 s

36/100

10%

TBT (Total Blocking Time)

Value110 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value6.1 s

63/100

10%

Network Requests Diagram

pvk.cz

334 ms

www.pvk.cz

1019 ms

web-ba8a54169e7c67c14756b7da6fc14b72.css

1243 ms

web-8d5a2de8b16cbeb37a08679e89f6e74f.js

1706 ms

ga.js

60 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 92% of them (34 requests) were addressed to the original Pvk.cz, 8% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Pvk.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 176.1 kB (19%)

Content Size

918.4 kB

After Optimization

742.2 kB

In fact, the total size of Pvk.cz main page is 918.4 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. 25% of websites need less resources to load. Images take 688.8 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 19.8 kB

  • Original 25.5 kB
  • After minification 22.9 kB
  • After compression 5.7 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 19.8 kB or 78% of the original size.

Image Optimization

-10%

Potential reduce by 68.3 kB

  • Original 688.8 kB
  • After minification 620.4 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. Pvk images are well optimized though.

JavaScript Optimization

-4%

Potential reduce by 647 B

  • Original 18.4 kB
  • After minification 18.4 kB
  • After compression 17.8 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. This website has mostly compressed JavaScripts.

CSS Optimization

-47%

Potential reduce by 87.4 kB

  • Original 185.7 kB
  • After minification 173.7 kB
  • After compression 98.3 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. Pvk.cz needs all CSS files to be minified and compressed as it can save up to 87.4 kB or 47% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (17%)

Requests Now

35

After Optimization

29

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Pvk. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Accessibility Review

pvk.cz accessibility score

93

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

Best Practices

pvk.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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

pvk.cz SEO score

91

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 Pvk.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 Pvk.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 Pvk. 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: