Report Summary

  • 22

    Performance

    Renders faster than
    41% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 72% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

clarkson.cz

Clarkson.cz | nářadí, nástroje a technologické poradenství

Page Load Speed

3.7 sec in total

First Response

883 ms

Resources Loaded

2.6 sec

Page Rendered

240 ms

clarkson.cz screenshot

About Website

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

Dodavatel všech typů nástroju pro soustružení, vrtání, závitování, frézování, broušení + technické poradenství

Visit clarkson.cz

Key Findings

We analyzed Clarkson.cz page load time and found that the first response time was 883 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

clarkson.cz performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

70/100

10%

LCP (Largest Contentful Paint)

Value9.4 s

1/100

25%

SI (Speed Index)

Value9.7 s

10/100

10%

TBT (Total Blocking Time)

Value3,190 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.115

86/100

15%

TTI (Time to Interactive)

Value15.7 s

6/100

10%

Network Requests Diagram

www.clarkson.cz

883 ms

minified.js

152 ms

focus-within-polyfill.js

322 ms

polyfill.min.js

324 ms

bootstrap-features.08dd9a91.bundle.min.js

116 ms

Our browser made a total of 32 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Clarkson.cz, 66% (21 requests) were made to Static.parastorage.com and 19% (6 requests) were made to Static.wixstatic.com. The less responsive or slowest element that took the longest time to load (1.2 sec) relates to the external source Static.wixstatic.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 749.6 kB (46%)

Content Size

1.6 MB

After Optimization

887.8 kB

In fact, the total size of Clarkson.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. Images take 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 426.7 kB

  • Original 549.7 kB
  • After minification 547.9 kB
  • After compression 123.0 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. 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 426.7 kB or 78% of the original size.

Image Optimization

-31%

Potential reduce by 322.9 kB

  • Original 1.0 MB
  • After minification 721.1 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, Clarkson needs image optimization as it can save up to 322.9 kB or 31% 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 48 B

  • Original 43.7 kB
  • After minification 43.7 kB
  • After compression 43.7 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. This website has mostly compressed JavaScripts.

Requests Breakdown

Number of requests can be reduced by 9 (39%)

Requests Now

23

After Optimization

14

The browser has sent 23 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Clarkson. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

clarkson.cz accessibility score

89

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

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

clarkson.cz best practices score

83

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

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

clarkson.cz SEO score

97

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 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 Clarkson.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 Clarkson.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 Clarkson. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: