Tools & Wizards About Us

Report Summary

  • 36

    Performance

    Renders faster than
    55% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

rockster.cz

Rockster Music - Prémiové kytary a hudební nástroje - Inspirace vaší hudbou

Page Load Speed

7 sec in total

First Response

145 ms

Resources Loaded

6.4 sec

Page Rendered

409 ms

About Website

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

Obchod hudebnimi nastroji se zaměřením na kytary, basové kytary, struny, efekty, kytarové příslušenství, pro audio, MIDI, zvukové převodníky, mikrofony, sluchátka. Limitované série kytar. Zdarma doruč...

Visit rockster.cz

Key Findings

We analyzed Rockster.cz page load time and found that the first response time was 145 ms and then it took 6.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

rockster.cz performance score

36

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

17/100

10%

LCP (Largest Contentful Paint)

Value4.8 s

30/100

25%

SI (Speed Index)

Value6.3 s

42/100

10%

TBT (Total Blocking Time)

Value1,200 ms

20/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value11.3 s

19/100

10%

Network Requests Diagram

rockster.cz

145 ms

rockster.cz

341 ms

www.rockster.cz

1225 ms

fbevents.js

29 ms

2f525d2e648e889e1041da669.js

57 ms

Our browser made a total of 184 requests to load all elements on the main page. We found that 3% of them (5 requests) were addressed to the original Rockster.cz, 88% (162 requests) were made to I00.eu and 2% (3 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (2.6 sec) relates to the external source I00.eu.

Page Optimization Overview & Recommendations

Page size can be reduced by 226.6 kB (11%)

Content Size

2.1 MB

After Optimization

1.9 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Rockster.cz main page is 2.1 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 1.8 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 219.0 kB

  • Original 251.3 kB
  • After minification 197.1 kB
  • After compression 32.3 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 54.2 kB, which is 22% 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 219.0 kB or 87% of the original size.

Image Optimization

-0%

Potential reduce by 7.4 kB

  • Original 1.8 MB
  • After minification 1.8 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. Rockster images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 209 B

  • Original 99.3 kB
  • After minification 99.3 kB
  • After compression 99.1 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.

Requests Breakdown

Number of requests can be reduced by 36 (21%)

Requests Now

172

After Optimization

136

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 172 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rockster. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

rockster.cz accessibility score

67

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-*] attributes do not match their roles

High

[aria-hidden="true"] elements contain focusable descendents

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

[aria-*] attributes do not have valid values

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

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>).

Best Practices

rockster.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

rockster.cz 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

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

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 Rockster.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 Rockster.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

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