Tools & Wizards About Us
preskoly.sk screenshot

Report Summary

  • 36

    Performance

    Renders faster than
    56% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

preskoly.sk

preskoly.sk - kníhkupectvo

Page Load Speed

4.5 sec in total

First Response

339 ms

Resources Loaded

3.9 sec

Page Rendered

270 ms

preskoly.sk screenshot

About Website

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

Internetové kníhkupectvo preskoly.sk Vám ponúka knihy, učebnice, pracovné zošity, slovníky, mapy, atlasy, školské potreby, darčeky, hry, hračky a ďalší doplnkový sortiment. Snažíme sa vždy o najlepšie...

Visit preskoly.sk

Key Findings

We analyzed Preskoly.sk page load time and found that the first response time was 339 ms and then it took 4.2 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

preskoly.sk performance score

36

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

41/100

10%

LCP (Largest Contentful Paint)

Value5.8 s

15/100

25%

SI (Speed Index)

Value4.9 s

64/100

10%

TBT (Total Blocking Time)

Value1,560 ms

13/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value9.5 s

30/100

10%

Network Requests Diagram

preskoly.sk

339 ms

preskoly.sk

486 ms

www.preskoly.sk

921 ms

preskolytm.js

454 ms

ecmtr-2.4.2.js

25 ms

Our browser made a total of 106 requests to load all elements on the main page. We found that 91% of them (96 requests) were addressed to the original Preskoly.sk, 4% (4 requests) were made to Fonts.gstatic.com and 2% (2 requests) were made to Cdn.luigisbox.com. The less responsive or slowest element that took the longest time to load (921 ms) belongs to the original domain Preskoly.sk.

Page Optimization Overview & Recommendations

Page size can be reduced by 192.9 kB (13%)

Content Size

1.5 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Preskoly.sk main page is 1.5 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. 55% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 144.2 kB

  • Original 176.7 kB
  • After minification 168.8 kB
  • After compression 32.4 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 144.2 kB or 82% of the original size.

Image Optimization

-4%

Potential reduce by 43.6 kB

  • Original 1.2 MB
  • After minification 1.2 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. Pre Sk Oly images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 1.4 kB

  • Original 72.2 kB
  • After minification 72.2 kB
  • After compression 70.8 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

-10%

Potential reduce by 3.7 kB

  • Original 35.4 kB
  • After minification 35.4 kB
  • After compression 31.7 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. Preskoly.sk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 19 (19%)

Requests Now

99

After Optimization

80

  • Images
  • JavaScript
  • CSS

The browser has sent 99 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Pre Sk Oly. 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 from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

preskoly.sk

preskoly.sk

339 ms

preskoly.sk

preskoly.sk

486 ms

www.preskoly.sk

www.preskoly.sk

921 ms

preskolytm.js

preskolytm.js

454 ms

ecmtr-2.4.2.js

ecmtr-2.4.2.js

25 ms

preskoly.js

preskoly.js

46 ms

webfontloader.js

webfontloader.js

123 ms

css_index.css

css_index.css

247 ms

all.css

all.css

341 ms

funkcie.js

funkcie.js

345 ms

jquery-1.4.2.pack.js

jquery-1.4.2.pack.js

470 ms

ui.core.min.js

ui.core.min.js

345 ms

jquery.fancybox-1.3.1.pack.js

jquery.fancybox-1.3.1.pack.js

345 ms

css_responsive.css

css_responsive.css

366 ms

perfect-scrollbar.css

perfect-scrollbar.css

467 ms

autocomplete.js

autocomplete.js

37 ms

autocomplete.js

autocomplete.js

467 ms

responsive_js.js

responsive_js.js

483 ms

jquery.animate-colors-min.js

jquery.animate-colors-min.js

483 ms

jquery.easing.1.3.min.js

jquery.easing.1.3.min.js

487 ms

ui.spinner.min.js

ui.spinner.min.js

563 ms

perfect-scrollbar.min.js

perfect-scrollbar.min.js

566 ms

f.js

f.js

567 ms

i

i

34 ms

css

css

34 ms

0QI6MX1D_JOuGQbT0gvTJPa787weuxJBkqg.ttf

0QI6MX1D_JOuGQbT0gvTJPa787weuxJBkqg.ttf

21 ms

0QI6MX1D_JOuGQbT0gvTJPa787z5vBJBkqg.ttf

0QI6MX1D_JOuGQbT0gvTJPa787z5vBJBkqg.ttf

25 ms

pxiEyp8kv8JHgFVrJJfedw.ttf

pxiEyp8kv8JHgFVrJJfedw.ttf

29 ms

pxiByp8kv8JHgFVrLEj6Z1xlEA.ttf

pxiByp8kv8JHgFVrLEj6Z1xlEA.ttf

28 ms

897.jpg

897.jpg

228 ms

preskoly-logo.png

preskoly-logo.png

118 ms

985.png

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124 ms

376.svg

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201 ms

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427 ms

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203 ms

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230 ms

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245 ms

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314 ms

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455 ms

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364 ms

CS.svg

CS.svg

429 ms

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430 ms

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456 ms

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483 ms

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540 ms

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542 ms

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544 ms

EN.svg

EN.svg

567 ms

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569 ms

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721 ms

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768 ms

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765 ms

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769 ms

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715 ms

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755 ms

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771 ms

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770 ms

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765 ms

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738 ms

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771 ms

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754 ms

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687 ms

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713 ms

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686 ms

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719 ms

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688 ms

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797 ms

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797 ms

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689 ms

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686 ms

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719 ms

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687 ms

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717 ms

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713 ms

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754 ms

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771 ms

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740 ms

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688 ms

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716 ms

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718 ms

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759 ms

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771 ms

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734 ms

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685 ms

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716 ms

heureka-overene-hodnotenie-obchodu-preskoly-sk.png

heureka-overene-hodnotenie-obchodu-preskoly-sk.png

716 ms

228.jpg

228.jpg

764 ms

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771 ms

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727 ms

764.png

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686 ms

bg-login.png

bg-login.png

716 ms

bg-tovar.jpg

bg-tovar.jpg

714 ms

flogo.png

flogo.png

768 ms

shopin2.gif

shopin2.gif

770 ms

footer-top-li.png

footer-top-li.png

719 ms

Accessibility Review

preskoly.sk accessibility score

100

Accessibility Issues

Best Practices

preskoly.sk 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

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

preskoly.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 Preskoly.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 Preskoly.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

preskoly.sk

Open Graph description is not detected on the main page of Pre Sk Oly. 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: