Tools & Wizards About Us
velux.sk screenshot

Report Summary

  • 6

    Performance

    Renders faster than
    21% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

velux.sk

Strešné okná, svetlíky, svetlovody a žalúzie, rolety a markízy VELUX

Page Load Speed

2.8 sec in total

First Response

214 ms

Resources Loaded

2.4 sec

Page Rendered

194 ms

velux.sk screenshot

About Website

Visit velux.sk now to see the best up-to-date VELUX content for Slovakia and also check out these interesting facts you probably never knew about velux.sk

Táto internetová stránka poskytuje informácie o všetkých strešných oknách, svetlíkoch, svetlovodoch a žalúziách, roletách a markízach pon&#2...

Visit velux.sk

Key Findings

We analyzed Velux.sk page load time and found that the first response time was 214 ms and then it took 2.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

velux.sk performance score

6

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

11/100

10%

LCP (Largest Contentful Paint)

Value12.6 s

0/100

25%

SI (Speed Index)

Value9.9 s

10/100

10%

TBT (Total Blocking Time)

Value5,970 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.403

25/100

15%

TTI (Time to Interactive)

Value27.4 s

0/100

10%

Network Requests Diagram

velux.sk

214 ms

www.velux.sk

647 ms

tailwind.min.css

31 ms

marketing.min.css

98 ms

jquery-3.3.0.min.js

98 ms

Our browser made a total of 76 requests to load all elements on the main page. We found that 4% of them (3 requests) were addressed to the original Velux.sk, 82% (62 requests) were made to Cdn-marketing.velux.com and 8% (6 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Cdn-marketing.velux.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 423.7 kB (13%)

Content Size

3.3 MB

After Optimization

2.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Velux.sk main page is 3.3 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. Only a small number of websites need less resources to load. Images take 2.4 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 203.5 kB

  • Original 227.6 kB
  • After minification 119.3 kB
  • After compression 24.1 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 108.3 kB, which is 48% 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 203.5 kB or 89% of the original size.

Image Optimization

-2%

Potential reduce by 44.2 kB

  • Original 2.4 MB
  • After minification 2.4 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. VELUX images are well optimized though.

JavaScript Optimization

-57%

Potential reduce by 175.9 kB

  • Original 306.0 kB
  • After minification 306.0 kB
  • After compression 130.1 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 175.9 kB or 57% of the original size.

CSS Optimization

-0%

Potential reduce by 89 B

  • Original 280.0 kB
  • After minification 280.0 kB
  • After compression 279.9 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. Velux.sk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 11 (16%)

Requests Now

68

After Optimization

57

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 68 CSS, Javascripts, AJAX and image requests in order to completely render the main page of VELUX. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

velux.sk

velux.sk

214 ms

www.velux.sk

www.velux.sk

647 ms

tailwind.min.css

tailwind.min.css

31 ms

marketing.min.css

marketing.min.css

98 ms

jquery-3.3.0.min.js

jquery-3.3.0.min.js

98 ms

jquery-migrate-3.3.2.js

jquery-migrate-3.3.2.js

155 ms

common.min.js

common.min.js

154 ms

components.min.js

components.min.js

161 ms

686777ed6d.js

686777ed6d.js

263 ms

gtm.js

gtm.js

332 ms

gtm.js

gtm.js

514 ms

header-bottom-bg.png

header-bottom-bg.png

76 ms

velux%20logo.svg

velux%20logo.svg

76 ms

bg_global_menu.png

bg_global_menu.png

75 ms

evrw_1200x563_sk.jpg

evrw_1200x563_sk.jpg

128 ms

velux-sprite.png

velux-sprite.png

80 ms

velux_heatprotection_sss_marketing_site_1280x600px_sk2.jpg

velux_heatprotection_sss_marketing_site_1280x600px_sk2.jpg

156 ms

icon-chevron-small-right.png

icon-chevron-small-right.png

83 ms

facebook.png

facebook.png

82 ms

email.png

email.png

81 ms

veluxgothic-light.woff

veluxgothic-light.woff

121 ms

veluxgothic-black.woff

veluxgothic-black.woff

93 ms

veluxgothic-bold.woff

veluxgothic-bold.woff

93 ms

veluxgothic-regular.woff

veluxgothic-regular.woff

93 ms

veluxgothic-light.woff

veluxgothic-light.woff

94 ms

veluxgothic-bold.woff

veluxgothic-bold.woff

95 ms

rooms.jpg

rooms.jpg

40 ms

projects.jpg

projects.jpg

39 ms

get-started.jpg

get-started.jpg

38 ms

inspiration-home.jpg

inspiration-home.jpg

40 ms

products2.jpg

products2.jpg

39 ms

contact.jpg

contact.jpg

36 ms

velux-konfigurator-vymen.jpg

velux-konfigurator-vymen.jpg

41 ms

id10113663_129922-04-xxl.jpg

id10113663_129922-04-xxl.jpg

42 ms

118582%2001_940x854.png

118582%2001_940x854.png

657 ms

zaskleni-velux-255x255.jpg

zaskleni-velux-255x255.jpg

440 ms

127187-02-300x300.jpg

127187-02-300x300.jpg

42 ms

id10136232_xxl.jpg

id10136232_xxl.jpg

42 ms

curved-glass-flatroof-window-menu-image.png

curved-glass-flatroof-window-menu-image.png

43 ms

twr.png

twr.png

43 ms

promotion-menu.jpg

promotion-menu.jpg

44 ms

doplnky-pro-chytra-stresni-okna-velux-300x300.jpg

doplnky-pro-chytra-stresni-okna-velux-300x300.jpg

438 ms

inspiracje-rooms-menu.jpg

inspiracje-rooms-menu.jpg

43 ms

inspiration-replacement-menu.jpg

inspiration-replacement-menu.jpg

45 ms

inspiration-renovation-menu.jpg

inspiration-renovation-menu.jpg

44 ms

inspiration-new-build-menu.jpg

inspiration-new-build-menu.jpg

45 ms

inspiration-articles-menu.jpg

inspiration-articles-menu.jpg

46 ms

user-stories-menu.jpg

user-stories-menu.jpg

45 ms

inspiration-case-hub-menu.jpg

inspiration-case-hub-menu.jpg

45 ms

inspiration-transformation-gallery.jpg

inspiration-transformation-gallery.jpg

47 ms

inspiration-3d-walk-menu.jpg

inspiration-3d-walk-menu.jpg

47 ms

inspiration-configurator-menu.jpg

inspiration-configurator-menu.jpg

48 ms

emotion_girl_magazine_110923%2003_300x300.jpg

emotion_girl_magazine_110923%2003_300x300.jpg

47 ms

reseni-velux-610x170.jpg

reseni-velux-610x170.jpg

48 ms

WindowTypes

WindowTypes

225 ms

rekonstrukce--velux-610x170.jpg

rekonstrukce--velux-610x170.jpg

111 ms

renovactive%20940x940.jpg

renovactive%20940x940.jpg

937 ms

zivot-pod-strechou-610x170.png

zivot-pod-strechou-610x170.png

626 ms

velux-mate-jasno-300x300.jpg

velux-mate-jasno-300x300.jpg

408 ms

velux-domecek-100x100.jpg

velux-domecek-100x100.jpg

711 ms

showroom-velux-cr-300x300.jpg

showroom-velux-cr-300x300.jpg

770 ms

service_maintenance_111143%2001_300x300.jpg

service_maintenance_111143%2001_300x300.jpg

406 ms

napojeni-vyrobku-velux-do-smart-home-940x470.jpg

napojeni-vyrobku-velux-do-smart-home-940x470.jpg

724 ms

guarantee_110060%2001_300x300.png

guarantee_110060%2001_300x300.png

621 ms

servicevisit.png

servicevisit.png

620 ms

ruka-mobil.jpg

ruka-mobil.jpg

855 ms

veluxshop_blinds_116211%2002_940x940.jpg

veluxshop_blinds_116211%2002_940x940.jpg

621 ms

lofts-shop_300x300.jpg

lofts-shop_300x300.jpg

621 ms

order-tracking-velux_01.jpg

order-tracking-velux_01.jpg

1051 ms

kupte-stresni-okna-velux-online.jpg

kupte-stresni-okna-velux-online.jpg

1118 ms

landing

landing

127 ms

gtm.js

gtm.js

105 ms

gtm.js

gtm.js

89 ms

traqed199.js

traqed199.js

559 ms

gtm.js

gtm.js

227 ms

js

js

96 ms

Accessibility Review

velux.sk accessibility score

84

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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

velux.sk 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

velux.sk SEO score

82

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

    SK

  • Language Claimed

    SK

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Velux.sk can be misinterpreted by Google and other search engines. Our service has detected that Slovak is used on the page, and it matches the claimed language. Our system also found out that Velux.sk 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

velux.sk

Open Graph data is detected on the main page of VELUX. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: