Tools & Wizards About Us
koloshop.cz screenshot

Report Summary

  • 55

    Performance

    Renders faster than
    72% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

koloshop.cz

Koloshop.cz - jízdní kola, horská kola, trekingová kola, dětská kola | Koloshop.cz

Page Load Speed

6.5 sec in total

First Response

480 ms

Resources Loaded

4.4 sec

Page Rendered

1.6 sec

koloshop.cz screenshot

About Website

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

Vyberte si jízdní kola z výběru až 400 kol připravených k vyzkoušení na prodejně. Prodejna, servis a bazar na jednom místě. Jízdní kola jsou náš život!

Visit koloshop.cz

Key Findings

We analyzed Koloshop.cz page load time and found that the first response time was 480 ms and then it took 6 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

koloshop.cz performance score

55

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

26/100

10%

LCP (Largest Contentful Paint)

Value5.0 s

27/100

25%

SI (Speed Index)

Value5.3 s

57/100

10%

TBT (Total Blocking Time)

Value350 ms

73/100

30%

CLS (Cumulative Layout Shift)

Value0.007

100/100

15%

TTI (Time to Interactive)

Value9.4 s

31/100

10%

Network Requests Diagram

koloshop.cz

480 ms

www.koloshop.cz

1193 ms

css2

36 ms

custom-bootstrap.css

441 ms

swiper-bundle.min.css

57 ms

Our browser made a total of 189 requests to load all elements on the main page. We found that 83% of them (156 requests) were addressed to the original Koloshop.cz, 4% (7 requests) were made to Cdn.jsdelivr.net and 2% (4 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Koloshop.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 902.1 kB (69%)

Content Size

1.3 MB

After Optimization

398.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Koloshop.cz main page is 1.3 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. HTML takes 907.5 kB which makes up the majority of the site volume.

HTML Optimization

-92%

Potential reduce by 835.6 kB

  • Original 907.5 kB
  • After minification 391.5 kB
  • After compression 71.9 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 516.0 kB, which is 57% 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 835.6 kB or 92% of the original size.

Image Optimization

-50%

Potential reduce by 51.2 kB

  • Original 102.5 kB
  • After minification 51.2 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. Obviously, Koloshop needs image optimization as it can save up to 51.2 kB or 50% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-3%

Potential reduce by 7.1 kB

  • Original 203.7 kB
  • After minification 203.7 kB
  • After compression 196.6 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

-9%

Potential reduce by 8.2 kB

  • Original 87.0 kB
  • After minification 87.0 kB
  • After compression 78.8 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. Koloshop.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 67 (37%)

Requests Now

181

After Optimization

114

  • Images
  • JavaScript
  • CSS

The browser has sent 181 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Koloshop. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

koloshop.cz

koloshop.cz

480 ms

www.koloshop.cz

www.koloshop.cz

1193 ms

css2

css2

36 ms

custom-bootstrap.css

custom-bootstrap.css

441 ms

swiper-bundle.min.css

swiper-bundle.min.css

57 ms

jquery-ui.css

jquery-ui.css

20 ms

bootstrap-select.min.css

bootstrap-select.min.css

74 ms

alertify.css

alertify.css

378 ms

style.css

style.css

483 ms

custom.css

custom.css

379 ms

cc.js

cc.js

830 ms

actions.js

actions.js

803 ms

persoo.js

persoo.js

1048 ms

persoo-ui.js

persoo-ui.js

1123 ms

gtm.js

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72 ms

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343 ms

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landing

landing

96 ms

js

js

92 ms

destination

destination

55 ms

rc.js

rc.js

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gjs.php

gjs.php

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ekko-lightbox.css

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98 ms

jquery.min.js

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82 ms

popper.min.js

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swiper-bundle.min.js

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97 ms

jquery-ui.min.js

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82 ms

bootstrap.min.js

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101 ms

bootstrap-select.min.js

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101 ms

ekko-lightbox.min.js

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212 ms

index.js

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104 ms

live-form-validation.js

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379 ms

script.js

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alertify.js

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custom.js

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entry-point

entry-point

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1 ms

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99416a91ebb54239-1600-1600-f-80.webp

564 ms

icon_green_check.svg

icon_green_check.svg

566 ms

modal_close.svg

modal_close.svg

653 ms

fast.svg

fast.svg

570 ms

login_white.svg

login_white.svg

565 ms

ico_fb_symbol.svg

ico_fb_symbol.svg

566 ms

ico_google_symbol.svg

ico_google_symbol.svg

566 ms

ico_seznam_symbol.svg

ico_seznam_symbol.svg

566 ms

message.svg

message.svg

653 ms

send-email.svg

send-email.svg

567 ms

3550e311f75862d2-200-200-e-60.webp

3550e311f75862d2-200-200-e-60.webp

566 ms

arrow_top.svg

arrow_top.svg

565 ms

icon_arrow_drop_down.svg

icon_arrow_drop_down.svg

565 ms

icon_strl_right.svg

icon_strl_right.svg

565 ms

workflow.js

workflow.js

90 ms

cz.svg

cz.svg

95 ms

cs.svg

cs.svg

96 ms

sk.svg

sk.svg

94 ms

sk.svg

sk.svg

96 ms

Accessibility Review

koloshop.cz accessibility score

82

Accessibility Issues

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

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.

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 IDs are not unique

Best Practices

koloshop.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

koloshop.cz SEO score

92

Search Engine Optimization Advices

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 Koloshop.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 Koloshop.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

koloshop.cz

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