Tools & Wizards About Us
slavona.cz screenshot

Report Summary

  • 33

    Performance

    Renders faster than
    53% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

slavona.cz

Dřevěná okna, dřevěné dveře | Slavona - dřevěná okna a dveře

Page Load Speed

4.1 sec in total

First Response

400 ms

Resources Loaded

3.3 sec

Page Rendered

445 ms

slavona.cz screenshot

About Website

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

SLAVONA je tradiční český výrobce dřevěných oken a dveří. Nechte si vyrobit na míru dřevěná okna, dřevěné vchodové dveře, balkonové a posuvné dveře.

Visit slavona.cz

Key Findings

We analyzed Slavona.cz page load time and found that the first response time was 400 ms and then it took 3.7 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

slavona.cz performance score

33

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

43/100

10%

LCP (Largest Contentful Paint)

Value20.9 s

0/100

25%

SI (Speed Index)

Value6.2 s

43/100

10%

TBT (Total Blocking Time)

Value440 ms

64/100

30%

CLS (Cumulative Layout Shift)

Value0.895

3/100

15%

TTI (Time to Interactive)

Value8.0 s

43/100

10%

Network Requests Diagram

slavona.cz

400 ms

www.slavona.cz

790 ms

plugin.css

98 ms

facebox.css

196 ms

plugin.css

288 ms

Our browser made a total of 83 requests to load all elements on the main page. We found that 84% of them (70 requests) were addressed to the original Slavona.cz, 7% (6 requests) were made to Fonts.gstatic.com and 2% (2 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Slavona.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 72.5 kB (2%)

Content Size

4.4 MB

After Optimization

4.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Slavona.cz main page is 4.4 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 4.0 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 58.9 kB

  • Original 68.2 kB
  • After minification 49.9 kB
  • After compression 9.2 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 18.2 kB, which is 27% 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 58.9 kB or 86% of the original size.

Image Optimization

-0%

Potential reduce by 5.2 kB

  • Original 4.0 MB
  • After minification 4.0 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. Slavona images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 4.8 kB

  • Original 286.9 kB
  • After minification 286.8 kB
  • After compression 282.1 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

-13%

Potential reduce by 3.6 kB

  • Original 27.6 kB
  • After minification 27.6 kB
  • After compression 24.0 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. Slavona.cz needs all CSS files to be minified and compressed as it can save up to 3.6 kB or 13% of the original size.

Requests Breakdown

Number of requests can be reduced by 41 (55%)

Requests Now

75

After Optimization

34

  • Images
  • JavaScript
  • CSS

The browser has sent 75 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Slavona. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

slavona.cz

slavona.cz

400 ms

www.slavona.cz

www.slavona.cz

790 ms

plugin.css

plugin.css

98 ms

facebox.css

facebox.css

196 ms

plugin.css

plugin.css

288 ms

main.css

main.css

289 ms

nav.min.css

nav.min.css

291 ms

slider.css

slider.css

286 ms

owl.carousel.custom.css

owl.carousel.custom.css

291 ms

animate.min.css

animate.min.css

298 ms

1.3.3-owl-transitions.css

1.3.3-owl-transitions.css

385 ms

owl.theme.css

owl.theme.css

384 ms

owl.carousel.min.css

owl.carousel.min.css

384 ms

lightgallery.min.css

lightgallery.min.css

385 ms

css

css

37 ms

css

css

52 ms

js

js

80 ms

js

js

126 ms

jquery-1.8.3.min.js

jquery-1.8.3.min.js

504 ms

plugin.js

plugin.js

438 ms

cs.lang.js

cs.lang.js

502 ms

jquery.defuscate.1.0.js

jquery.defuscate.1.0.js

502 ms

facebox.js

facebox.js

503 ms

scripts.js

scripts.js

503 ms

plugin.js

plugin.js

521 ms

api.js

api.js

38 ms

owl.carousel.min.js

owl.carousel.min.js

580 ms

megamenu.min.js

megamenu.min.js

578 ms

stacktable.js

stacktable.js

578 ms

jquery.matchHeight-min.js

jquery.matchHeight-min.js

578 ms

script.js

script.js

626 ms

picturefill.min.js

picturefill.min.js

630 ms

lightgallery.min.js

lightgallery.min.js

673 ms

lg-thumbnail.min.js

lg-thumbnail.min.js

671 ms

lg-autoplay.min.js

lg-autoplay.min.js

671 ms

lg-hash.min.js

lg-hash.min.js

674 ms

lg-pager.min.js

lg-pager.min.js

722 ms

jquery.mousewheel.min.js

jquery.mousewheel.min.js

727 ms

landing

landing

136 ms

recaptcha__cs.js

recaptcha__cs.js

57 ms

logo.gif

logo.gif

264 ms

drevena-icon.png

drevena-icon.png

265 ms

drevouhlikova-icon.png

drevouhlikova-icon.png

266 ms

bezramova-icon.png

bezramova-icon.png

266 ms

bezpecnostni-icon.png

bezpecnostni-icon.png

289 ms

kliky-a-kovani-icon.png

kliky-a-kovani-icon.png

297 ms

parapety-icon-small.png

parapety-icon-small.png

333 ms

zaluzie-a-stineni-icon.png

zaluzie-a-stineni-icon.png

334 ms

poptavka.jpg

poptavka.jpg

333 ms

search-button.png

search-button.png

334 ms

scroll-down-btn.png

scroll-down-btn.png

388 ms

podpis.jpg

podpis.jpg

396 ms

pasivni-domy-img.jpg

pasivni-domy-img.jpg

616 ms

nova-zelena-usporam-icon.png

nova-zelena-usporam-icon.png

429 ms

clen-centra-pasivniho-domu-icon.png

clen-centra-pasivniho-domu-icon.png

429 ms

ceska-rodinna-firma-icon.png

ceska-rodinna-firma-icon.png

428 ms

vlastni-vyvoj-icon.png

vlastni-vyvoj-icon.png

482 ms

drevo-icon.png

drevo-icon.png

496 ms

vase-predstavy-icon.png

vase-predstavy-icon.png

526 ms

podpora-nizkoenergetickych-staveb-icon.png

podpora-nizkoenergetickych-staveb-icon.png

526 ms

bezudrzbovost-icon.png

bezudrzbovost-icon.png

524 ms

bezpecnost-icon.png

bezpecnost-icon.png

575 ms

zivotni-prostredi-icon.png

zivotni-prostredi-icon.png

596 ms

Drevostavba_470px.jpg

Drevostavba_470px.jpg

791 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVcUwaEQXjM.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVcUwaEQXjM.ttf

18 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4uaVcUwaEQXjM.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4uaVcUwaEQXjM.ttf

76 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVcUwaEQXjM.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVcUwaEQXjM.ttf

80 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVcUwaEQXjM.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVcUwaEQXjM.ttf

80 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1x4uaVcUwaEQXjM.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1x4uaVcUwaEQXjM.ttf

129 ms

TK3_WkUHHAIjg75cFRf3bXL8LICs1_FvsUhiYCSUhiCnAw.ttf

TK3_WkUHHAIjg75cFRf3bXL8LICs1_FvsUhiYCSUhiCnAw.ttf

81 ms

mokradni_470px.jpg

mokradni_470px.jpg

858 ms

slamacek_470px.jpg

slamacek_470px.jpg

859 ms

spolkovy-dum-470px.jpg

spolkovy-dum-470px.jpg

625 ms

phone-icon.png

phone-icon.png

607 ms

email-icon.png

email-icon.png

617 ms

facebook-icon.png

facebook-icon.png

670 ms

instagram-icon.png

instagram-icon.png

660 ms

youtube-icon.png

youtube-icon.png

670 ms

slide-3.jpg

slide-3.jpg

794 ms

slide-1.jpg

slide-1.jpg

1230 ms

slide-5.jpg

slide-5.jpg

927 ms

slide-hs-portal.jpg

slide-hs-portal.jpg

833 ms

slide-2.jpg

slide-2.jpg

1021 ms

Accessibility Review

slavona.cz accessibility score

81

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

slavona.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

SEO Factors

slavona.cz SEO score

100

Search Engine Optimization Advices

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

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 Slavona.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 Slavona.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

slavona.cz

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