Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 55% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 58

    SEO

    Google-friendlier than
    20% of websites

forbikes.cz

15. veletrh cyklistiky

Page Load Speed

4.5 sec in total

First Response

731 ms

Resources Loaded

3.3 sec

Page Rendered

490 ms

forbikes.cz screenshot

About Website

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

15. veletrh cyklistiky

Visit forbikes.cz

Key Findings

We analyzed Forbikes.cz page load time and found that the first response time was 731 ms and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

forbikes.cz performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.5 s

1/100

10%

LCP (Largest Contentful Paint)

Value16.2 s

0/100

25%

SI (Speed Index)

Value18.7 s

0/100

10%

TBT (Total Blocking Time)

Value3,240 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value20.1 s

2/100

10%

Network Requests Diagram

forbikes.cz

731 ms

bootstrap.css

123 ms

bootstrap-datetimepicker.min.css

229 ms

fullcalendar.css

230 ms

bootstrap-toggle-buttons.css

237 ms

Our browser made a total of 69 requests to load all elements on the main page. We found that 87% of them (60 requests) were addressed to the original Forbikes.cz, 3% (2 requests) were made to Google-analytics.com and 3% (2 requests) were made to S.ytimg.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Forbikes.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (70%)

Content Size

1.6 MB

After Optimization

479.6 kB

In fact, the total size of Forbikes.cz main page is 1.6 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. 60% of websites need less resources to load. Javascripts take 860.1 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 66.4 kB

  • Original 80.5 kB
  • After minification 70.9 kB
  • After compression 14.1 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 9.6 kB, which is 12% 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 66.4 kB or 83% of the original size.

Image Optimization

-7%

Potential reduce by 9.2 kB

  • Original 126.8 kB
  • After minification 117.6 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. Forbikes images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 598.5 kB

  • Original 860.1 kB
  • After minification 807.0 kB
  • After compression 261.7 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 598.5 kB or 70% of the original size.

CSS Optimization

-83%

Potential reduce by 419.3 kB

  • Original 505.6 kB
  • After minification 463.8 kB
  • After compression 86.3 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. Forbikes.cz needs all CSS files to be minified and compressed as it can save up to 419.3 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 35 (71%)

Requests Now

49

After Optimization

14

The browser has sent 49 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Forbikes. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 18 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

forbikes.cz accessibility score

83

Accessibility Issues

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.

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

forbikes.cz best practices score

58

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

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

forbikes.cz SEO score

58

Search Engine Optimization Advices

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

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 Forbikes.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 Forbikes.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

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