Tools & Wizards About Us
domacialarm.cz screenshot

Report Summary

  • 92

    Performance

    Renders faster than
    92% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

domacialarm.cz

Alarm Jablotron JA-100+ pro domácnost | domacialarm.cz

Page Load Speed

3.9 sec in total

First Response

385 ms

Resources Loaded

2.2 sec

Page Rendered

1.3 sec

domacialarm.cz screenshot

About Website

Welcome to domacialarm.cz homepage info - get ready to check Domaci Alarm best content right away, or after learning these important things about domacialarm.cz

Instalujeme zabezpečovací systém pro rodinné domy a byty v Praze, středních Čechách, Pardubickém kraji a na Vysočině. Odborně, rychle, čistě a šetrně.

Visit domacialarm.cz

Key Findings

We analyzed Domacialarm.cz page load time and found that the first response time was 385 ms and then it took 3.5 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

domacialarm.cz performance score

92

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

85/100

10%

LCP (Largest Contentful Paint)

Value2.6 s

88/100

25%

SI (Speed Index)

Value4.1 s

79/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.01

100/100

15%

TTI (Time to Interactive)

Value3.7 s

90/100

10%

Network Requests Diagram

domacialarm.cz

385 ms

domacnost-rodinny-dum-byt

139 ms

bootstrap.css

207 ms

custom.css

283 ms

fancybox.css

286 ms

Our browser made a total of 39 requests to load all elements on the main page. We found that all of those requests were addressed to Domacialarm.cz and no external sources were called. The less responsive or slowest element that took the longest time to load (890 ms) belongs to the original domain Domacialarm.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 35.9 kB (10%)

Content Size

370.8 kB

After Optimization

334.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Domacialarm.cz main page is 370.8 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. 25% of websites need less resources to load. Images take 216.4 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 33.1 kB

  • Original 41.8 kB
  • After minification 41.8 kB
  • After compression 8.7 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 33.1 kB or 79% of the original size.

Image Optimization

-1%

Potential reduce by 2.4 kB

  • Original 216.4 kB
  • After minification 214.0 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. Domaci Alarm images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 48 B

  • Original 76.2 kB
  • After minification 76.2 kB
  • After compression 76.1 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 382 B

  • Original 36.4 kB
  • After minification 36.4 kB
  • After compression 36.1 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. Domacialarm.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 11 (31%)

Requests Now

36

After Optimization

25

  • Images
  • JavaScript
  • CSS

The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Domaci Alarm. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

domacialarm.cz

domacialarm.cz

385 ms

domacnost-rodinny-dum-byt

domacnost-rodinny-dum-byt

139 ms

bootstrap.css

bootstrap.css

207 ms

custom.css

custom.css

283 ms

fancybox.css

fancybox.css

286 ms

web-logo-domacialarm-cz-default.png

web-logo-domacialarm-cz-default.png

332 ms

logo-jablotron-100-plus-default.png

logo-jablotron-100-plus-default.png

332 ms

kradez-default.svg

kradez-default.svg

332 ms

pozar-default.svg

pozar-default.svg

335 ms

zaplaveni-default.svg

zaplaveni-default.svg

374 ms

plyn-default.svg

plyn-default.svg

376 ms

teplota-default.svg

teplota-default.svg

404 ms

nebezpeci-default.svg

nebezpeci-default.svg

406 ms

ovladani-default.svg

ovladani-default.svg

408 ms

platinovy-montazni-partner-jablotron-default.png

platinovy-montazni-partner-jablotron-default.png

408 ms

nejremeslnici-default.png

nejremeslnici-default.png

468 ms

33-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

33-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

563 ms

bootstrap.bundle.min.js

bootstrap.bundle.min.js

607 ms

glide.js

glide.js

503 ms

shave.js

shave.js

503 ms

init.js

init.js

506 ms

fancybox.js

fancybox.js

657 ms

31-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

31-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

706 ms

30-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

30-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

708 ms

28-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

28-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

628 ms

27-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

27-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

660 ms

25-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

25-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

711 ms

24-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

24-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

709 ms

23-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

23-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

757 ms

22-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

22-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

794 ms

21-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

21-instalace-zabezpecovaciho-systemu-jablotron-ja-100.jpg

811 ms

byt-default.png

byt-default.png

809 ms

domacnost-default.png

domacnost-default.png

812 ms

chata-default.png

chata-default.png

815 ms

tip-default.png

tip-default.png

852 ms

logo-bezpecnostni-centrum-jablotron-default.png

logo-bezpecnostni-centrum-jablotron-default.png

890 ms

dum-interier-default.svg

dum-interier-default.svg

765 ms

mapa-pusobnosti-default.svg

mapa-pusobnosti-default.svg

619 ms

material-icons-regular.woff

material-icons-regular.woff

795 ms

Accessibility Review

domacialarm.cz accessibility score

91

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-*] attributes do not match their roles

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.

Best Practices

domacialarm.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

High

Page has valid source maps

SEO Factors

domacialarm.cz SEO score

100

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

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 Domacialarm.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 Domacialarm.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

domacialarm.cz

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