Access bikecontrol.cz. Horská, silniční kola, Maxbike, Shimano, Endura

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value6.7 s

8/100

25%

SI (Speed Index)

Value5.7 s

51/100

10%

TBT (Total Blocking Time)

Value210 ms

89/100

30%

CLS (Cumulative Layout Shift)

Value0.014

100/100

15%

TTI (Time to Interactive)

Value5.3 s

73/100

10%

bikecontrol.cz

393 ms

www.bikecontrol.cz

854 ms

styles-30.css

292 ms

scripts-30.js

576 ms

logo.svg

126 ms

Our browser made a total of 105 requests to load all elements on the main page. We found that 10% of them (10 requests) were addressed to the original Bikecontrol.cz, 90% (95 requests) were made to Bikecontrol.b-cdn.net. The less responsive or slowest element that took the longest time to load (854 ms) belongs to the original domain Bikecontrol.cz.

Content Size

303.0 kB

After Optimization

197.8 kB

In fact, the total size of Bikecontrol.cz main page is 303.0 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. 30% of websites need less resources to load. Javascripts take 131.9 kB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 104.0 kB

Original 116.5 kB
After minification 86.9 kB
After compression 12.5 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 29.6 kB, which is 25% 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 104.0 kB or 89% of the original size.

Image Optimization

-15%

Potential reduce by 1.0 kB

Original 6.9 kB
After minification 5.9 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, Bikecontrol needs image optimization as it can save up to 1.0 kB or 15% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 12 B

Original 131.9 kB
After minification 131.9 kB
After compression 131.9 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

-1%

Potential reduce by 278 B

Original 47.7 kB
After minification 47.7 kB
After compression 47.4 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. Bikecontrol.cz has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 99 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bikecontrol. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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.

High

Links do not have a discernible name

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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/).

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 Bikecontrol.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 Bikecontrol.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

bikecontrol.cz

Open Graph description is not detected on the main page of Bikecontrol. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

Horská, silniční kola, Maxbike, Shimano, Endura | eshop Bikecontrol

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

bikecontrol.cz

www.bikecontrol.cz

styles-30.css

scripts-30.js

logo.svg

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

bikecontrol.cz

www.bikecontrol.cz

styles-30.css

scripts-30.js

logo.svg

netshops.png

cookie.svg

137.webp

6.jpg

14.jpg

24.webp

132.webp

38.jpg

40.jpg

53.jpg

63.jpg

79.jpg

100.webp

117.webp

2.webp

152.jpg

155.webp

35.jpg

171.webp

196.jpg

173.jpg

186.jpg

188.jpg

189.jpg

192.jpg

194.jpg

197.jpg

199.jpg

201.jpg

205.jpg

247.jpg

234.jpg

237.webp

238.jpg

248.jpg

757.webp

767.webp

NeueHaasDisplayRoman.ttf