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krystov.cz screenshot

Report Summary

  • 63

    Performance

    Renders faster than
    77% of other websites

  • 65

    Accessibility

    Visual factors better than
    that of 30% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

krystov.cz

Plastová okna Brno - KRYŠTOV Group

Page Load Speed

3.5 sec in total

First Response

548 ms

Resources Loaded

2.7 sec

Page Rendered

265 ms

krystov.cz screenshot

About Website

Welcome to krystov.cz homepage info - get ready to check Krystov best content right away, or after learning these important things about krystov.cz

Plastová okna Brno, KRYŠTOV Group. Profily čtyři až sedm komor, až tři těsnění, krytá ocelová výztuž, vysoká pevnost a stálost. Kvalitní a prověřený český výrobce plastových oken a dveří.

Visit krystov.cz

Key Findings

We analyzed Krystov.cz page load time and found that the first response time was 548 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

krystov.cz performance score

63

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

35/100

10%

LCP (Largest Contentful Paint)

Value6.0 s

13/100

25%

SI (Speed Index)

Value5.9 s

47/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value5.7 s

68/100

10%

Network Requests Diagram

krystov.cz

548 ms

www.krystov.cz

584 ms

main.css

325 ms

jquery.lightbox-0.5.css

226 ms

jquery.js

434 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 85% of them (29 requests) were addressed to the original Krystov.cz, 6% (2 requests) were made to Google-analytics.com and 3% (1 request) were made to Proverenaspolecnost.cz. The less responsive or slowest element that took the longest time to load (673 ms) belongs to the original domain Krystov.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 156.0 kB (21%)

Content Size

755.2 kB

After Optimization

599.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Krystov.cz main page is 755.2 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. 30% of websites need less resources to load. Images take 475.2 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 16.6 kB

  • Original 23.1 kB
  • After minification 20.3 kB
  • After compression 6.5 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 2.8 kB, which is 12% 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 16.6 kB or 72% of the original size.

Image Optimization

-3%

Potential reduce by 15.7 kB

  • Original 475.2 kB
  • After minification 459.5 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. Krystov images are well optimized though.

JavaScript Optimization

-45%

Potential reduce by 106.2 kB

  • Original 235.6 kB
  • After minification 221.9 kB
  • After compression 129.4 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 106.2 kB or 45% of the original size.

CSS Optimization

-82%

Potential reduce by 17.5 kB

  • Original 21.3 kB
  • After minification 15.5 kB
  • After compression 3.8 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. Krystov.cz needs all CSS files to be minified and compressed as it can save up to 17.5 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (24%)

Requests Now

29

After Optimization

22

  • Images
  • JavaScript
  • CSS

The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Krystov. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

krystov.cz

krystov.cz

548 ms

www.krystov.cz

www.krystov.cz

584 ms

main.css

main.css

325 ms

jquery.lightbox-0.5.css

jquery.lightbox-0.5.css

226 ms

jquery.js

jquery.js

434 ms

jquery.lightbox-0.5.js

jquery.lightbox-0.5.js

331 ms

common-func.js

common-func.js

227 ms

swfobject.js

swfobject.js

226 ms

jquery.js

jquery.js

655 ms

easySlider1.7.js

easySlider1.7.js

342 ms

pieczec.php

pieczec.php

276 ms

header.jpg

header.jpg

334 ms

header.png

header.png

123 ms

facebook-share.png

facebook-share.png

122 ms

slide2.jpg

slide2.jpg

228 ms

slider-cnt-bg.png

slider-cnt-bg.png

122 ms

slide3.jpg

slide3.jpg

374 ms

slide4.jpg

slide4.jpg

448 ms

slide5.jpg

slide5.jpg

552 ms

arrow-right.png

arrow-right.png

239 ms

bar-plastove-okno-brugmann.jpg

bar-plastove-okno-brugmann.jpg

343 ms

bar-okna-avantgarde-ovlo.jpg

bar-okna-avantgarde-ovlo.jpg

456 ms

bar-plastove-okno-gealan.jpg

bar-plastove-okno-gealan.jpg

450 ms

bar-plastove-okno-salamander.jpg

bar-plastove-okno-salamander.jpg

459 ms

sedmikomorova-plastova-okna-salamander-ico.jpg

sedmikomorova-plastova-okna-salamander-ico.jpg

496 ms

sestikomorovy-profil-plastovych-oken-gealan-ico.jpg

sestikomorovy-profil-plastovych-oken-gealan-ico.jpg

568 ms

petikomorovy-profil-v-plastovych-oknech-brugmann-ico.jpg

petikomorovy-profil-v-plastovych-oknech-brugmann-ico.jpg

668 ms

akcni-letak.jpg

akcni-letak.jpg

673 ms

slider-cnt-bg.png

slider-cnt-bg.png

128 ms

retargeting.js

retargeting.js

589 ms

ga.js

ga.js

10 ms

__utm.gif

__utm.gif

13 ms

prev.png

prev.png

118 ms

next.png

next.png

117 ms

Accessibility Review

krystov.cz accessibility score

65

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.

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

krystov.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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

krystov.cz SEO score

62

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

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 Krystov.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 Krystov.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

krystov.cz

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