Tools & Wizards About Us
radar.bourky.cz screenshot

Report Summary

  • 41

    Performance

    Renders faster than
    60% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

radar.bourky.cz

radar.bourky.cz - prohlížeč radarových dat

Page Load Speed

23.3 sec in total

First Response

528 ms

Resources Loaded

22.6 sec

Page Rendered

108 ms

radar.bourky.cz screenshot

About Website

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

Aktuální radarová data z České radarové sítě CZRAD - www.chmi.cz

Visit radar.bourky.cz

Key Findings

We analyzed Radar.bourky.cz page load time and found that the first response time was 528 ms and then it took 22.7 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

radar.bourky.cz performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.7 s

5/100

10%

LCP (Largest Contentful Paint)

Value7.2 s

5/100

25%

SI (Speed Index)

Value7.6 s

25/100

10%

TBT (Total Blocking Time)

Value480 ms

60/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value8.1 s

41/100

10%

Network Requests Diagram

radar.bourky.cz

528 ms

radar.bourky.cz

854 ms

main.css

109 ms

bootstrap.css

235 ms

leaflet.css

321 ms

Our browser made a total of 77 requests to load all elements on the main page. We found that 88% of them (68 requests) were addressed to the original Radar.bourky.cz, 4% (3 requests) were made to Unpkg.com and 3% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (20 sec) relates to the external source Toplist.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 161.6 kB (32%)

Content Size

497.8 kB

After Optimization

336.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Radar.bourky.cz main page is 497.8 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. 45% of websites need less resources to load. Javascripts take 298.8 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 17.4 kB

  • Original 22.9 kB
  • After minification 21.2 kB
  • After compression 5.5 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. 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 17.4 kB or 76% of the original size.

Image Optimization

-67%

Potential reduce by 96.9 kB

  • Original 145.8 kB
  • After minification 48.8 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, Radar Bourky needs image optimization as it can save up to 96.9 kB or 67% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-15%

Potential reduce by 44.5 kB

  • Original 298.8 kB
  • After minification 298.8 kB
  • After compression 254.3 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 44.5 kB or 15% of the original size.

CSS Optimization

-9%

Potential reduce by 2.7 kB

  • Original 30.3 kB
  • After minification 30.3 kB
  • After compression 27.6 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. Radar.bourky.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 46 (63%)

Requests Now

73

After Optimization

27

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 73 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Radar Bourky. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 34 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

radar.bourky.cz

radar.bourky.cz

528 ms

radar.bourky.cz

radar.bourky.cz

854 ms

main.css

main.css

109 ms

bootstrap.css

bootstrap.css

235 ms

leaflet.css

leaflet.css

321 ms

leaflet-search.min.css

leaflet-search.min.css

323 ms

leaflet.contextmenu.min.css

leaflet.contextmenu.min.css

322 ms

L.Icon.Pulse.css

L.Icon.Pulse.css

325 ms

font-awesome.min.css

font-awesome.min.css

326 ms

nouislider.min.css

nouislider.min.css

341 ms

colorbox.css

colorbox.css

432 ms

leaflet-compass.css

leaflet-compass.css

432 ms

L.Control.Locate.min.css

L.Control.Locate.min.css

432 ms

L.VisualClick.css

L.VisualClick.css

433 ms

maplibre-gl.css

maplibre-gl.css

43 ms

all.css

all.css

37 ms

maplibre-gl.js

maplibre-gl.js

64 ms

jquery-3.6.0.min.js

jquery-3.6.0.min.js

559 ms

jquery.slidereveal.min.js

jquery.slidereveal.min.js

493 ms

jquery.colorbox-min.js

jquery.colorbox-min.js

538 ms

confirm.js

confirm.js

537 ms

moment.min.js

moment.min.js

647 ms

FileSaver.min.js

FileSaver.min.js

538 ms

Blob.js

Blob.js

606 ms

nouislider.min.js

nouislider.min.js

647 ms

windy.js

windy.js

660 ms

html2canvas.min.js

html2canvas.min.js

917 ms

leaflet.js

leaflet.js

699 ms

leaflet-search.min.js

leaflet-search.min.js

728 ms

leaflet.togeojson.js

leaflet.togeojson.js

754 ms

leaflet.contextmenu.min.js

leaflet.contextmenu.min.js

752 ms

leaflet-double-touch-drag-zoom.js

leaflet-double-touch-drag-zoom.js

766 ms

leaflet-compass.js

leaflet-compass.js

806 ms

leaflet-maplibre-gl.js

leaflet-maplibre-gl.js

835 ms

L.CanvasLayer.js

L.CanvasLayer.js

859 ms

L.Control.Velocity.js

L.Control.Velocity.js

859 ms

L.VelocityLayer.js

L.VelocityLayer.js

955 ms

L.Terminator.js

L.Terminator.js

913 ms

L.Webcams.js

L.Webcams.js

956 ms

L.VisualClick.js

L.VisualClick.js

964 ms

js

js

51 ms

L.Icon.Pulse.js

L.Icon.Pulse.js

966 ms

maplibre-gl.css

maplibre-gl.css

23 ms

L.Control.Credits.js

L.Control.Credits.js

917 ms

L.Control.MousePosition.js

L.Control.MousePosition.js

793 ms

L.Control.Locate.min.js

L.Control.Locate.min.js

710 ms

L.Control.easy-button.js

L.Control.easy-button.js

732 ms

L.Control.PolylineMeasure.js

L.Control.PolylineMeasure.js

756 ms

main.min.js

main.min.js

912 ms

stupnice-l.png

stupnice-l.png

224 ms

estofex_logo.png

estofex_logo.png

150 ms

button.png

button.png

150 ms

menu-icon.png

menu-icon.png

224 ms

icon-weather.png

icon-weather.png

151 ms

icon-weathergraphs.png

icon-weathergraphs.png

222 ms

icon-webcam.png

icon-webcam.png

223 ms

icon-cells.png

icon-cells.png

224 ms

icon-sivs.png

icon-sivs.png

225 ms

icon-hydro.png

icon-hydro.png

317 ms

icon-blitzortung.png

icon-blitzortung.png

317 ms

icon-estofex.png

icon-estofex.png

319 ms

icon-wind.png

icon-wind.png

319 ms

icon-aero.png

icon-aero.png

320 ms

icon-metar.png

icon-metar.png

321 ms

icon-airplane.png

icon-airplane.png

424 ms

icon-network.png

icon-network.png

422 ms

icon-radar.png

icon-radar.png

425 ms

icon-save.png

icon-save.png

425 ms

icon-fav.png

icon-fav.png

426 ms

icon_daynight.png

icon_daynight.png

427 ms

icon-info.png

icon-info.png

528 ms

appstore.png

appstore.png

529 ms

88x31.png

88x31.png

530 ms

js

js

46 ms

analytics.js

analytics.js

19 ms

collect

collect

56 ms

dot.asp

dot.asp

20024 ms

Accessibility Review

radar.bourky.cz accessibility score

88

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

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

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

Best Practices

radar.bourky.cz best practices score

67

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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

radar.bourky.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

Language and Encoding

  • Language Detected

    CS

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Radar.bourky.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Radar.bourky.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

radar.bourky.cz

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