Tools & Wizards About Us
hdsystems.cz screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 55

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

hdsystems.cz

HD Systems - profesionální kamerové systémy

Page Load Speed

5.4 sec in total

First Response

327 ms

Resources Loaded

4.8 sec

Page Rendered

352 ms

hdsystems.cz screenshot

About Website

Click here to check amazing HD Systems content. Otherwise, check out these important facts you probably never knew about hdsystems.cz

Obchod s profesionálními kamerovými systémy, kamerové sety, záznamové zařízení, IP kamery, AHD, CVI, 4 megapixel

Visit hdsystems.cz

Key Findings

We analyzed Hdsystems.cz page load time and found that the first response time was 327 ms and then it took 5.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

hdsystems.cz performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value7.9 s

3/100

25%

SI (Speed Index)

Value8.3 s

19/100

10%

TBT (Total Blocking Time)

Value1,180 ms

21/100

30%

CLS (Cumulative Layout Shift)

Value0.005

100/100

15%

TTI (Time to Interactive)

Value9.5 s

30/100

10%

Network Requests Diagram

hdsystems.cz

327 ms

913 ms

v_543_db3a974f98c511b0b501197dbb19591a_all.css

255 ms

v_323_1922d409589ffd211051c55bc9a2b052.js

599 ms

css

25 ms

Our browser made a total of 52 requests to load all elements on the main page. We found that 75% of them (39 requests) were addressed to the original Hdsystems.cz, 6% (3 requests) were made to Google-analytics.com and 4% (2 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (2.3 sec) belongs to the original domain Hdsystems.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 533.2 kB (21%)

Content Size

2.6 MB

After Optimization

2.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Hdsystems.cz main page is 2.6 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. 65% of websites need less resources to load. Images take 1.9 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 77.1 kB

  • Original 93.8 kB
  • After minification 93.8 kB
  • After compression 16.7 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 77.1 kB or 82% of the original size.

Image Optimization

-2%

Potential reduce by 37.0 kB

  • Original 1.9 MB
  • After minification 1.9 MB

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. HD Systems images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 211.7 kB

  • Original 309.0 kB
  • After minification 309.0 kB
  • After compression 97.4 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 211.7 kB or 68% of the original size.

CSS Optimization

-83%

Potential reduce by 207.5 kB

  • Original 248.6 kB
  • After minification 244.6 kB
  • After compression 41.1 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. Hdsystems.cz needs all CSS files to be minified and compressed as it can save up to 207.5 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (9%)

Requests Now

46

After Optimization

42

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 46 CSS, Javascripts, AJAX and image requests in order to completely render the main page of HD Systems. 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

hdsystems.cz

hdsystems.cz

327 ms

913 ms

v_543_db3a974f98c511b0b501197dbb19591a_all.css

v_543_db3a974f98c511b0b501197dbb19591a_all.css

255 ms

v_323_1922d409589ffd211051c55bc9a2b052.js

v_323_1922d409589ffd211051c55bc9a2b052.js

599 ms

css

css

25 ms

hd-systems-logo-1450013016.jpg

hd-systems-logo-1450013016.jpg

158 ms

a1906a833fac2c1a6815498e33932312f8c8b9e2_banner2.png

a1906a833fac2c1a6815498e33932312f8c8b9e2_banner2.png

623 ms

4d84b2876e34a30d51ad7a1b1cfb5ffab5884094_banner5.png

4d84b2876e34a30d51ad7a1b1cfb5ffab5884094_banner5.png

1036 ms

544227c235c9f624ee27a0e6cffb86aa3db571bc_banner7.png

544227c235c9f624ee27a0e6cffb86aa3db571bc_banner7.png

1032 ms

5c7d9596fb1ddcad8fe2d83dcfcfd86ec943cf8d_banner8.png

5c7d9596fb1ddcad8fe2d83dcfcfd86ec943cf8d_banner8.png

1032 ms

b9741796fe8180dabc4e6eed06eab9e88417e250_banner3.png

b9741796fe8180dabc4e6eed06eab9e88417e250_banner3.png

1031 ms

c9f0dc939c3b7ce4a41d344492c75e7d3909f092_banner6.png

c9f0dc939c3b7ce4a41d344492c75e7d3909f092_banner6.png

1039 ms

kamerovy-system-kamerovy-set-hd-ahd400229ah-4ch-dvr.jpg

kamerovy-system-kamerovy-set-hd-ahd400229ah-4ch-dvr.jpg

1031 ms

kamerovy-system-set-hd-ahd400e4r21ah.jpg

kamerovy-system-set-hd-ahd400e4r21ah.jpg

1032 ms

kamerovy-system-kamerovy-set-hd-ahd4004r21ahb.jpg

kamerovy-system-kamerovy-set-hd-ahd4004r21ahb.jpg

1033 ms

hdcvi-kamera-hd-24hr.jpg

hdcvi-kamera-hd-24hr.jpg

1035 ms

digitalni-zaznamove-zarizeni-dvr-hd-ahd800-8ch.jpg

digitalni-zaznamove-zarizeni-dvr-hd-ahd800-8ch.jpg

1035 ms

kamerovy-system-kamerovy-set-hd-ahd8008r21ah.jpg

kamerovy-system-kamerovy-set-hd-ahd8008r21ah.jpg

1066 ms

utp-kabel-cat5.jpg

utp-kabel-cat5.jpg

1101 ms

kabel-datovy-5e-uutp.jpg

kabel-datovy-5e-uutp.jpg

1039 ms

koaxialni-kabel-rg59-s-napajeci-dvoulinkou-2x-10mm.jpg

koaxialni-kabel-rg59-s-napajeci-dvoulinkou-2x-10mm.jpg

1159 ms

koaxialni-kabel-rg59-venkovni.jpg

koaxialni-kabel-rg59-venkovni.jpg

1060 ms

napajeci-konektor-zdirka-sroubovaci.jpg

napajeci-konektor-zdirka-sroubovaci.jpg

1101 ms

napajeci-dvoulinka.jpg

napajeci-dvoulinka.jpg

1116 ms

napajeci-konektor-vidlice-sroubovaci.jpg

napajeci-konektor-vidlice-sroubovaci.jpg

1181 ms

bnc-konektor-sroubovaci.jpg

bnc-konektor-sroubovaci.jpg

1183 ms

spojka-bnc.jpg

spojka-bnc.jpg

1222 ms

bnc-konektor-s-redukci-na-f.jpg

bnc-konektor-s-redukci-na-f.jpg

1223 ms

konektor-rj45-se-svorkovnici.jpg

konektor-rj45-se-svorkovnici.jpg

1231 ms

bezpecnostni-kamera-hd-r29b.jpg

bezpecnostni-kamera-hd-r29b.jpg

1277 ms

hd-835b.jpg

hd-835b.jpg

1298 ms

bezpecnostni-kamera-hd-ptz18ah.jpg

bezpecnostni-kamera-hd-ptz18ah.jpg

1302 ms

bezpecnostni-kamera-hd-av16.jpg

bezpecnostni-kamera-hd-av16.jpg

1340 ms

bezpecnostni-kamera-hd-v29ah.jpg

bezpecnostni-kamera-hd-v29ah.jpg

1347 ms

bezpecnostni-kamera-hd-40ah-objektiv-28-12mm.jpg

bezpecnostni-kamera-hd-40ah-objektiv-28-12mm.jpg

1347 ms

hdcvi-dome-kamera-hd-46fh-objektiv-28-12mm.jpg

hdcvi-dome-kamera-hd-46fh-objektiv-28-12mm.jpg

2336 ms

all.js

all.js

37 ms

analytics.js

analytics.js

35 ms

footer-bg.png

footer-bg.png

2189 ms

bx_loader.gif

bx_loader.gif

2075 ms

price-container-bg.png

price-container-bg.png

2073 ms

ec.js

ec.js

29 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

2164 ms

MTP_ySUJH_bn48VBG8sNStqQynqKV_9Plp7mupa0S4g.ttf

MTP_ySUJH_bn48VBG8sNStqQynqKV_9Plp7mupa0S4g.ttf

12 ms

DXI1ORHCpsQm3Vp6mXoaTdqQynqKV_9Plp7mupa0S4g.ttf

DXI1ORHCpsQm3Vp6mXoaTdqQynqKV_9Plp7mupa0S4g.ttf

12 ms

308 ms

collect

collect

20 ms

xd_arbiter.php

xd_arbiter.php

166 ms

xd_arbiter.php

xd_arbiter.php

190 ms

widget_v2.135.js

widget_v2.135.js

37 ms

avatar_simple_visitor.png

avatar_simple_visitor.png

87 ms

aL63HcygAAVYuCCsAAA==

aL63HcygAAVYuCCsAAA==

3 ms

Accessibility Review

hdsystems.cz accessibility score

55

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

Form elements do not have associated labels

High

Links do not have a discernible name

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.

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

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

hdsystems.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

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

SEO Factors

hdsystems.cz SEO score

92

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Hdsystems.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and it does not match the claimed English language. Our system also found out that Hdsystems.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

hdsystems.cz

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