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supernoty.cz screenshot

Report Summary

  • 34

    Performance

    Renders faster than
    54% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

supernoty.cz

The biggest music portal in Central Europe - Supernoty.cz | SuperNoty.cz

Page Load Speed

10.9 sec in total

First Response

2.6 sec

Resources Loaded

7.9 sec

Page Rendered

405 ms

supernoty.cz screenshot

About Website

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

We offer about 200,000 songs both Czech and foreign. Musical notes for piano, piano, flute, guitar, drums, keyboards, violin and many other musical instruments.

Visit supernoty.cz

Key Findings

We analyzed Supernoty.cz page load time and found that the first response time was 2.6 sec and then it took 8.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

supernoty.cz performance score

34

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

32/100

10%

LCP (Largest Contentful Paint)

Value3.7 s

57/100

25%

SI (Speed Index)

Value10.8 s

6/100

10%

TBT (Total Blocking Time)

Value3,030 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value15.7 s

6/100

10%

Network Requests Diagram

supernoty.cz

2613 ms

style.min.css

116 ms

jquery.selectBox.css

231 ms

font-awesome.css

338 ms

prettyPhoto.css

337 ms

Our browser made a total of 168 requests to load all elements on the main page. We found that 99% of them (166 requests) were addressed to the original Supernoty.cz, 1% (1 request) were made to Code.jquery.com and 1% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (2.6 sec) belongs to the original domain Supernoty.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 720.7 kB (13%)

Content Size

5.6 MB

After Optimization

4.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Supernoty.cz main page is 5.6 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. 70% of websites need less resources to load. Images take 5.0 MB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 363.5 kB

  • Original 402.1 kB
  • After minification 392.9 kB
  • After compression 38.6 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 363.5 kB or 90% of the original size.

Image Optimization

-7%

Potential reduce by 352.8 kB

  • Original 5.0 MB
  • After minification 4.6 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. Supernoty images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 726 B

  • Original 150.9 kB
  • After minification 150.9 kB
  • After compression 150.2 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

-5%

Potential reduce by 3.7 kB

  • Original 72.0 kB
  • After minification 72.0 kB
  • After compression 68.3 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. Supernoty.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 41 (25%)

Requests Now

163

After Optimization

122

  • Images
  • JavaScript
  • CSS

The browser has sent 163 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Supernoty. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

supernoty.cz

supernoty.cz

2613 ms

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style.min.css

116 ms

jquery.selectBox.css

jquery.selectBox.css

231 ms

font-awesome.css

font-awesome.css

338 ms

prettyPhoto.css

prettyPhoto.css

337 ms

style.css

style.css

341 ms

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336 ms

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343 ms

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344 ms

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449 ms

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447 ms

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Accessibility Review

supernoty.cz accessibility score

87

Accessibility Issues

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-hidden="true"] elements contain focusable descendents

High

ARIA IDs are not unique

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

Links do not have a discernible name

Best Practices

supernoty.cz best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

supernoty.cz SEO score

93

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    CS

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Supernoty.cz can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed Czech language. Our system also found out that Supernoty.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

supernoty.cz

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