Tools & Wizards About Us
superknihy.sk screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

superknihy.sk

Martinus - Najväčšie internetové kníhkupectvo | Martinus

Page Load Speed

2.3 sec in total

First Response

239 ms

Resources Loaded

1.6 sec

Page Rendered

463 ms

superknihy.sk screenshot

About Website

Welcome to superknihy.sk homepage info - get ready to check Superknihy best content right away, or after learning these important things about superknihy.sk

Milujeme knihy rovnako ako vy. Viac ako 200 000 titulov zo všetkých oblastí, rýchla expedícia, ľudský zákaznícky servis, výhodné ceny a vždy bezpečný nákup.

Visit superknihy.sk

Key Findings

We analyzed Superknihy.sk page load time and found that the first response time was 239 ms and then it took 2.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

superknihy.sk performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value8.5 s

2/100

25%

SI (Speed Index)

Value9.2 s

13/100

10%

TBT (Total Blocking Time)

Value3,030 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.099

90/100

15%

TTI (Time to Interactive)

Value19.7 s

2/100

10%

Network Requests Diagram

superknihy.sk

239 ms

www.martinus.sk

744 ms

martinus.async.js

35 ms

uc.js

30 ms

style.css

55 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Superknihy.sk, 41% (14 requests) were made to Mrtns.sk and 18% (6 requests) were made to Rs4.martinus.sk. The less responsive or slowest element that took the longest time to load (744 ms) relates to the external source Martinus.sk.

Page Optimization Overview & Recommendations

Page size can be reduced by 144.5 kB (18%)

Content Size

817.1 kB

After Optimization

672.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Superknihy.sk main page is 817.1 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 50% of websites need less resources to load. Javascripts take 334.7 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 135.1 kB

  • Original 167.6 kB
  • After minification 148.9 kB
  • After compression 32.5 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 18.7 kB, which is 11% 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 135.1 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 276.4 kB
  • After minification 276.4 kB

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. Superknihy images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 9.3 kB

  • Original 334.7 kB
  • After minification 334.7 kB
  • After compression 325.4 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

-0%

Potential reduce by 12 B

  • Original 38.5 kB
  • After minification 38.5 kB
  • After compression 38.5 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. Superknihy.sk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 18 (56%)

Requests Now

32

After Optimization

14

  • Images
  • JavaScript
  • CSS

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Superknihy. 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

superknihy.sk

superknihy.sk

239 ms

www.martinus.sk

www.martinus.sk

744 ms

martinus.async.js

martinus.async.js

35 ms

uc.js

uc.js

30 ms

style.css

style.css

55 ms

modernizr.js

modernizr.js

48 ms

vendor.js

vendor.js

50 ms

main.js

main.js

97 ms

font-awesome.js

font-awesome.js

90 ms

autocomplete.js

autocomplete.js

21 ms

martinus_sk.production.js

martinus_sk.production.js

95 ms

martinus.js

martinus.js

88 ms

martinus.hotwire.js

martinus.hotwire.js

91 ms

trackjs.php

trackjs.php

599 ms

j.php

j.php

110 ms

lg.php

lg.php

517 ms

b5e866bc140ff9a177d2d73a54831475.png

b5e866bc140ff9a177d2d73a54831475.png

120 ms

app.svg

app.svg

114 ms

9f2aa77212b772d5542901a93307e934.jpg

9f2aa77212b772d5542901a93307e934.jpg

111 ms

0d6f87af2d1c1d4abc4eb31968f50422.jpg

0d6f87af2d1c1d4abc4eb31968f50422.jpg

110 ms

6904ffbd43ea8e6d21facbb3469f0c0c.jpg

6904ffbd43ea8e6d21facbb3469f0c0c.jpg

112 ms

4331b10706526e3d8b71f3a9316ebeeb.jpg

4331b10706526e3d8b71f3a9316ebeeb.jpg

111 ms

pix.gif

pix.gif

436 ms

logo.svg

logo.svg

49 ms

logo-small.svg

logo-small.svg

67 ms

m21077.jpg

m21077.jpg

65 ms

heart-rainbow.svg

heart-rainbow.svg

85 ms

lg.php

lg.php

503 ms

lg.php

lg.php

501 ms

lg.php

lg.php

513 ms

lg.php

lg.php

515 ms

lg.php

lg.php

528 ms

autocomplete.css

autocomplete.css

27 ms

main.css

main.css

42 ms

Accessibility Review

superknihy.sk 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-*] attributes do not match their roles

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

[id] attributes on active, focusable elements are not unique

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

Links do not have a discernible name

Best Practices

superknihy.sk best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

Page has valid source maps

SEO Factors

superknihy.sk SEO score

90

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

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 Superknihy.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 Superknihy.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

superknihy.sk

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