Tools & Wizards About Us
vseprokolo.cz screenshot

Report Summary

  • 30

    Performance

    Renders faster than
    50% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

vseprokolo.cz

Jízdní kola - Prodej a servis, Hradec Králové | VšeProKolo.cz

Page Load Speed

8.9 sec in total

First Response

397 ms

Resources Loaded

8.1 sec

Page Rendered

359 ms

vseprokolo.cz screenshot

About Website

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

Jízdní kola, komponenty, příslušenství a doplňky. Záruka kvality, dobrých cen a špičkového servisu. Neváhejte a vybírejte. Rychlé dodání. Zboží skladem.

Visit vseprokolo.cz

Key Findings

We analyzed Vseprokolo.cz page load time and found that the first response time was 397 ms and then it took 8.5 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

vseprokolo.cz performance score

30

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

13/100

10%

LCP (Largest Contentful Paint)

Value5.2 s

24/100

25%

SI (Speed Index)

Value8.7 s

16/100

10%

TBT (Total Blocking Time)

Value1,280 ms

18/100

30%

CLS (Cumulative Layout Shift)

Value0.054

98/100

15%

TTI (Time to Interactive)

Value16.6 s

5/100

10%

Network Requests Diagram

vseprokolo.cz

397 ms

www.vseprokolo.cz

1083 ms

gtm.js

80 ms

css

33 ms

jquery.ui.css

109 ms

Our browser made a total of 367 requests to load all elements on the main page. We found that 93% of them (340 requests) were addressed to the original Vseprokolo.cz, 2% (8 requests) were made to Youtube.com and 2% (7 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source Mapy.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 936.6 kB (21%)

Content Size

4.5 MB

After Optimization

3.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Vseprokolo.cz main page is 4.5 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. Only a small number of websites need less resources to load. Images take 3.7 MB which makes up the majority of the site volume.

HTML Optimization

-92%

Potential reduce by 363.5 kB

  • Original 395.5 kB
  • After minification 172.7 kB
  • After compression 32.0 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 222.8 kB, which is 56% 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 363.5 kB or 92% of the original size.

Image Optimization

-14%

Potential reduce by 520.2 kB

  • Original 3.7 MB
  • After minification 3.2 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. Obviously, Vse Pro Kolo needs image optimization as it can save up to 520.2 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-13%

Potential reduce by 39.8 kB

  • Original 311.0 kB
  • After minification 302.6 kB
  • After compression 271.2 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 39.8 kB or 13% of the original size.

CSS Optimization

-11%

Potential reduce by 13.1 kB

  • Original 115.0 kB
  • After minification 115.0 kB
  • After compression 101.9 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. Vseprokolo.cz needs all CSS files to be minified and compressed as it can save up to 13.1 kB or 11% of the original size.

Requests Breakdown

Number of requests can be reduced by 50 (14%)

Requests Now

358

After Optimization

308

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 358 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vse Pro Kolo. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

vseprokolo.cz

vseprokolo.cz

397 ms

www.vseprokolo.cz

www.vseprokolo.cz

1083 ms

gtm.js

gtm.js

80 ms

css

css

33 ms

jquery.ui.css

jquery.ui.css

109 ms

uiselect.css

uiselect.css

199 ms

lightbox.css

lightbox.css

296 ms

bootstrap.min.css

bootstrap.min.css

395 ms

vseprokolo.css

vseprokolo.css

405 ms

rateit.css

rateit.css

297 ms

customall.css

customall.css

296 ms

jquery.js

jquery.js

413 ms

jquery.ui.js

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jquery.uiselect.js

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bootstrap.min.js

bootstrap.min.js

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latinize.js

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Create

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95 ms

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GenerateIT

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30877-atlantic.jpg

30877-atlantic.jpg

618 ms

83-unior.jpg

83-unior.jpg

620 ms

81-cycle-clinic.jpg

81-cycle-clinic.jpg

624 ms

80-ferdus.png

80-ferdus.png

623 ms

53-sunrace.png

53-sunrace.png

638 ms

52-ventura.jpg

52-ventura.jpg

617 ms

47941-max1.jpg

47941-max1.jpg

617 ms

118-didriksons.jpg

118-didriksons.jpg

619 ms

149-bellelli.jpg

149-bellelli.jpg

620 ms

145-selle-monte-grappa.png

145-selle-monte-grappa.png

622 ms

21578-schwalbe.jpg

21578-schwalbe.jpg

642 ms

142-selle-smp.jpg

142-selle-smp.jpg

616 ms

27300-vape.jpg

27300-vape.jpg

614 ms

110-zoom.jpg

110-zoom.jpg

618 ms

21574-etape.png

21574-etape.png

618 ms

30768-zefal.jpg

30768-zefal.jpg

619 ms

147-ddk.jpg

147-ddk.jpg

643 ms

21590-roeckl.jpg

21590-roeckl.jpg

615 ms

90-kalin.jpg

90-kalin.jpg

614 ms

63438-rudy-project.jpg

63438-rudy-project.jpg

619 ms

40770-genuine-innovations.jpg

40770-genuine-innovations.jpg

618 ms

40758-swissten.jpg

40758-swissten.jpg

620 ms

39262-michelin.jpg

39262-michelin.jpg

646 ms

33097-trelock.jpg

33097-trelock.jpg

615 ms

30878-yarroline.jpg

30878-yarroline.jpg

613 ms

43015-urbaniki.jpg

43015-urbaniki.jpg

618 ms

44256-xlc.jpg

44256-xlc.jpg

618 ms

61875-fulcrum.jpg

61875-fulcrum.jpg

617 ms

60578-cyclon.jpg

60578-cyclon.jpg

645 ms

60579-knog.jpg

60579-knog.jpg

616 ms

59358-wista.jpg

59358-wista.jpg

616 ms

57687-4ever.jpg

57687-4ever.jpg

616 ms

53769-joe-s-no-flats.jpg

53769-joe-s-no-flats.jpg

621 ms

51969-esi.jpg

51969-esi.jpg

618 ms

64122-r2.jpg

64122-r2.jpg

638 ms

27314-race-one.jpg

27314-race-one.jpg

618 ms

103-alhonga.jpg

103-alhonga.jpg

623 ms

93-kmc.png

93-kmc.png

616 ms

92-ravx.jpg

92-ravx.jpg

621 ms

106-delfi.png

106-delfi.png

620 ms

14971-tektro.jpg

14971-tektro.jpg

632 ms

113-qt-cycle-tech.png

113-qt-cycle-tech.png

618 ms

108-velosteel.jpg

108-velosteel.jpg

628 ms

107-onguard.png

107-onguard.png

616 ms

47977-beto.jpg

47977-beto.jpg

624 ms

42-tacx.jpg

42-tacx.jpg

621 ms

21566-cst.jpg

21566-cst.jpg

629 ms

27100-r-b.png

27100-r-b.png

618 ms

27007-sport-arsenal.jpg

27007-sport-arsenal.jpg

624 ms

27343-elite.jpg

27343-elite.jpg

627 ms

27099-crussis.jpg

27099-crussis.jpg

626 ms

36536-kross.jpg

36536-kross.jpg

619 ms

21565-polednik.jpg

21565-polednik.jpg

626 ms

40-xerama.jpg

40-xerama.jpg

619 ms

62897-mitas-rubena.jpg

62897-mitas-rubena.jpg

622 ms

21567-remerx.jpg

21567-remerx.jpg

630 ms

21518-jagwire.jpg

21518-jagwire.jpg

623 ms

33-axon.jpg

33-axon.jpg

620 ms

8-sportful.jpg

8-sportful.jpg

623 ms

7-shocart.png

7-shocart.png

622 ms

21517-smart.jpg

21517-smart.jpg

622 ms

5-velo.jpg

5-velo.jpg

635 ms

4-sigma.jpg

4-sigma.jpg

626 ms

3-c-max.jpg

3-c-max.jpg

621 ms

62595-uvex.jpg

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622 ms

34629-craft.jpg

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620 ms

23752-author.jpg

23752-author.jpg

620 ms

14-cateye.jpg

14-cateye.jpg

640 ms

13-sram.jpg

13-sram.jpg

622 ms

27098-bbb.jpg

27098-bbb.jpg

621 ms

21575-sks.jpg

21575-sks.jpg

624 ms

18847-hamax.jpg

18847-hamax.jpg

621 ms

119-suntour.jpg

119-suntour.jpg

615 ms

62260-one.jpg

62260-one.jpg

649 ms

27104-sensor.jpg

27104-sensor.jpg

625 ms

27179-mach1.jpg

27179-mach1.jpg

620 ms

21576-magnum.jpg

21576-magnum.jpg

624 ms

127-kenda.jpg

127-kenda.jpg

624 ms

23740-rst.jpg

23740-rst.jpg

618 ms

26896-isostar.jpg

26896-isostar.jpg

653 ms

133-marzocchi.gif

133-marzocchi.gif

615 ms

23465-continental.jpg

23465-continental.jpg

620 ms

21577-slime.jpg

21577-slime.jpg

625 ms

97-force.jpg

97-force.jpg

623 ms

21573-arctica.jpg

21573-arctica.jpg

619 ms

65188-silvini.jpg

65188-silvini.jpg

651 ms

55-vella.jpg

55-vella.jpg

615 ms

54-fi-zik.jpg

54-fi-zik.jpg

621 ms

48-barbieri.jpg

48-barbieri.jpg

623 ms

47-kovys.gif

47-kovys.gif

619 ms

45-brunox.jpg

45-brunox.jpg

623 ms

21519-maxxis.jpg

21519-maxxis.jpg

651 ms

57695-alpina.jpg

57695-alpina.jpg

615 ms

76-coyote.png

76-coyote.png

621 ms

21571-promax.jpg

21571-promax.jpg

618 ms

62-velobel.png

62-velobel.png

621 ms

48017-motorex.jpg

48017-motorex.jpg

622 ms

27102-look.jpg

27102-look.jpg

652 ms

img-3d.png

img-3d.png

712 ms

badge-advantages.png

badge-advantages.png

622 ms

logo.png

logo.png

619 ms

slider-arrow-left.png

slider-arrow-left.png

620 ms

slider-arrow-right.png

slider-arrow-right.png

625 ms

cat-menu-arrow.png

cat-menu-arrow.png

652 ms

check.svg

check.svg

618 ms

ico-info.svg

ico-info.svg

647 ms

loyalty-points.svg

loyalty-points.svg

616 ms

ico-detail.png

ico-detail.png

625 ms

cart-add.png

cart-add.png

680 ms

ico-plus.png

ico-plus.png

649 ms

ssc-arrow-down.png

ssc-arrow-down.png

616 ms

ssc-arrow-up.png

ssc-arrow-up.png

645 ms

ico-detail-news.png

ico-detail-news.png

615 ms

youtube.png

youtube.png

627 ms

ico-home.png

ico-home.png

679 ms

ico-play.png

ico-play.png

646 ms

ico-login.png

ico-login.png

620 ms

favorite-menu.png

favorite-menu.png

647 ms

comparison-menu.png

comparison-menu.png

614 ms

btn-cart.png

btn-cart.png

626 ms

btn-search.png

btn-search.png

677 ms

link-arrow-left.png

link-arrow-left.png

638 ms

link-arrow-right.png

link-arrow-right.png

626 ms

footer-logo.png

footer-logo.png

645 ms

ico-advantage.png

ico-advantage.png

616 ms

arrow-page-up.png

arrow-page-up.png

628 ms

prev.png

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675 ms

next.png

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632 ms

loading.gif

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626 ms

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646 ms

Accessibility Review

vseprokolo.cz accessibility score

68

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 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.

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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.

Best Practices

vseprokolo.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

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

vseprokolo.cz 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

    CS

  • Language Claimed

    CS

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vseprokolo.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 Vseprokolo.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

vseprokolo.cz

Open Graph description is not detected on the main page of Vse Pro Kolo. 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: