Tools & Wizards About Us
zvuk.sk screenshot

Report Summary

  • 39

    Performance

    Renders faster than
    58% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 40% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

zvuk.sk

Zvuk.sk - zvuková technika | ZVUK.sk – internetový obchod

Page Load Speed

4 sec in total

First Response

222 ms

Resources Loaded

3.4 sec

Page Rendered

393 ms

zvuk.sk screenshot

About Website

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

Výhodný internetový obchod so zvukovou technikou. Reproduktory, mixpulty, mikrofóny, konferenčné systémy, kompletné audio príslušenstvo.

Visit zvuk.sk

Key Findings

We analyzed Zvuk.sk page load time and found that the first response time was 222 ms and then it took 3.8 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

zvuk.sk performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.0 s

10/100

10%

LCP (Largest Contentful Paint)

Value9.5 s

0/100

25%

SI (Speed Index)

Value8.1 s

21/100

10%

TBT (Total Blocking Time)

Value170 ms

93/100

30%

CLS (Cumulative Layout Shift)

Value0.261

47/100

15%

TTI (Time to Interactive)

Value15.3 s

7/100

10%

Network Requests Diagram

zvuk.sk

222 ms

zvuk.sk

425 ms

www.zvuk.sk

541 ms

gtm.js

103 ms

css

76 ms

Our browser made a total of 96 requests to load all elements on the main page. We found that 71% of them (68 requests) were addressed to the original Zvuk.sk, 8% (8 requests) were made to App.livechatoo.com and 4% (4 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Zvuk.sk.

Page Optimization Overview & Recommendations

Page size can be reduced by 257.6 kB (7%)

Content Size

3.5 MB

After Optimization

3.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zvuk.sk main page is 3.5 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. 65% of websites need less resources to load. Images take 3.0 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 85.5 kB

  • Original 109.6 kB
  • After minification 102.2 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. 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 85.5 kB or 78% of the original size.

Image Optimization

-5%

Potential reduce by 159.9 kB

  • Original 3.0 MB
  • After minification 2.8 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. Zvuk images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 8.2 kB

  • Original 355.3 kB
  • After minification 355.3 kB
  • After compression 347.1 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

-8%

Potential reduce by 3.9 kB

  • Original 50.5 kB
  • After minification 50.5 kB
  • After compression 46.6 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. Zvuk.sk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 41 (48%)

Requests Now

85

After Optimization

44

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 85 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zvuk. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 31 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

zvuk.sk

zvuk.sk

222 ms

zvuk.sk

zvuk.sk

425 ms

www.zvuk.sk

www.zvuk.sk

541 ms

gtm.js

gtm.js

103 ms

css

css

76 ms

font-awesome.min.css

font-awesome.min.css

135 ms

slick.css

slick.css

225 ms

jquery.fancybox.css

jquery.fancybox.css

313 ms

jquery.auto-complete.css

jquery.auto-complete.css

330 ms

jquery.bootstrap-touchspin.min.css

jquery.bootstrap-touchspin.min.css

331 ms

style.css

style.css

447 ms

html5shiv.min.js

html5shiv.min.js

346 ms

modernizr-2.6.2-respond-1.1.0.min.js

modernizr-2.6.2-respond-1.1.0.min.js

346 ms

llarik.css

llarik.css

414 ms

user.css

user.css

438 ms

jquery.min.js

jquery.min.js

56 ms

api.js

api.js

72 ms

bootstrap.min.js

bootstrap.min.js

437 ms

media.match.min.js

media.match.min.js

529 ms

enquire.min.js

enquire.min.js

529 ms

jquery-ui.min.js

jquery-ui.min.js

548 ms

jquery.auto-complete.min.js

jquery.auto-complete.min.js

587 ms

jquery.ui.touch-punch.min.js

jquery.ui.touch-punch.min.js

596 ms

jquery.fancybox.pack.js

jquery.fancybox.pack.js

597 ms

jquery.countdown.min.js

jquery.countdown.min.js

597 ms

jquery.bootstrap-touchspin.min.js

jquery.bootstrap-touchspin.min.js

598 ms

js.cookie.js

js.cookie.js

674 ms

inputmask.js

inputmask.js

810 ms

jquery.inputmask.js

jquery.inputmask.js

732 ms

plugins.js

plugins.js

732 ms

main.js

main.js

733 ms

slick.min.js

slick.min.js

733 ms

e3.js

e3.js

799 ms

conversion.js

conversion.js

127 ms

recaptcha__en.js

recaptcha__en.js

102 ms

quatro_300x218.jpg

quatro_300x218.jpg

1166 ms

logo.png

logo.png

584 ms

yamaha-dm3-mixpult-novinka.jpg

yamaha-dm3-mixpult-novinka.jpg

807 ms

SSL2_slider.jpg

SSL2_slider.jpg

933 ms

SSL-connex_slider_5.jpg

SSL-connex_slider_5.jpg

829 ms

SSL-bigsix_slider_4.jpg

SSL-bigsix_slider_4.jpg

896 ms

zvuk_slider_videokonf.jpg

zvuk_slider_videokonf.jpg

922 ms

zvuk_web-slider-sluchadla_AT-M50X_.png

zvuk_web-slider-sluchadla_AT-M50X_.png

821 ms

SSL-six-slider.jpg

SSL-six-slider.jpg

1021 ms

zvuk_web-slider_dynaudio-BM5.jpg

zvuk_web-slider_dynaudio-BM5.jpg

1268 ms

left-1.png

left-1.png

957 ms

left-2.png

left-2.png

1008 ms

left-4.png

left-4.png

1036 ms

facebook.png

facebook.png

1048 ms

googleplus.png

googleplus.png

1070 ms

instagram.png

instagram.png

1109 ms

youtube.png

youtube.png

1128 ms

eu.png

eu.png

1147 ms

TIW-PR.jpg

TIW-PR.jpg

1164 ms

SSL2-CARRYCASE.jpg

SSL2-CARRYCASE.jpg

1409 ms

VICSTUDIOBOX.jpg

VICSTUDIOBOX.jpg

1414 ms

ARENA.jpg

ARENA.jpg

1216 ms

B00164_1.jpg

B00164_1.jpg

1345 ms

KFOmCnqEu92Fr1Mu7GxM.woff

KFOmCnqEu92Fr1Mu7GxM.woff

71 ms

KFOlCnqEu92Fr1MmEU9fChc-.woff

KFOlCnqEu92Fr1MmEU9fChc-.woff

137 ms

KFOlCnqEu92Fr1MmSU5fChc-.woff

KFOlCnqEu92Fr1MmSU5fChc-.woff

156 ms

KFOlCnqEu92Fr1MmWUlfChc-.woff

KFOlCnqEu92Fr1MmWUlfChc-.woff

167 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

1255 ms

sdk.js

sdk.js

147 ms

iframescripts.html

iframescripts.html

1303 ms

cookieconsent.js

cookieconsent.js

159 ms

iframemanager.js

iframemanager.js

159 ms

cart.woff

cart.woff

1294 ms

KT-CJ.jpg

KT-CJ.jpg

1312 ms

KT-JJ.jpg

KT-JJ.jpg

1363 ms

VICSTUDIOVMT.jpg

VICSTUDIOVMT.jpg

1493 ms

KY7.jpg

KY7.jpg

1394 ms

SSL-UF8.jpg

SSL-UF8.jpg

1333 ms

sdk.js

sdk.js

11 ms

SM10V.jpg

SM10V.jpg

1299 ms

KT-CC.jpg

KT-CC.jpg

1394 ms

yamaha-dm3-thumbnail.jpg

yamaha-dm3-thumbnail.jpg

1334 ms

thumb-Schoeps.jpg

thumb-Schoeps.jpg

1368 ms

cookieconsent.css

cookieconsent.css

16 ms

iframemanager.css

iframemanager.css

23 ms

thumb-Schoeps-2.jpg

thumb-Schoeps-2.jpg

1331 ms

web.min.js

web.min.js

619 ms

342 ms

gjs.php

gjs.php

389 ms

slick.woff

slick.woff

1083 ms

logo-alt.png

logo-alt.png

1076 ms

17 ms

cd-top-arrow.svg

cd-top-arrow.svg

899 ms

ajax-loader.gif

ajax-loader.gif

888 ms

sk

sk

134 ms

global.css

global.css

112 ms

client-embed.min.js

client-embed.min.js

228 ms

client-embed-sk.min.js

client-embed-sk.min.js

339 ms

logo-56624d1b78538.jpg

logo-56624d1b78538.jpg

111 ms

ilu_arw.png

ilu_arw.png

111 ms

ico_status.png

ico_status.png

145 ms

Accessibility Review

zvuk.sk accessibility score

74

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.

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA IDs are not unique

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

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

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

zvuk.sk best practices score

67

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

Browser errors were logged to the console

SEO Factors

zvuk.sk SEO score

83

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zvuk.sk can be misinterpreted by Google and other search engines. Our service has detected that Slovak 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 Zvuk.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

zvuk.sk

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