Tools & Wizards About Us
centralnivysavace.cz screenshot

Report Summary

  • 21

    Performance

    Renders faster than
    39% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

centralnivysavace.cz

Centrální vysavače s.r.o. Brno. Váš servis pro centrální vysavače.

Page Load Speed

3.8 sec in total

First Response

360 ms

Resources Loaded

3.2 sec

Page Rendered

288 ms

centralnivysavace.cz screenshot

About Website

Click here to check amazing Centralnivysavace content for Czech Republic. Otherwise, check out these important facts you probably never knew about centralnivysavace.cz

Centrální vysavače s.r.o. Brno. Váš rychlý servis pro centrální vysavače.

Visit centralnivysavace.cz

Key Findings

We analyzed Centralnivysavace.cz page load time and found that the first response time was 360 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

centralnivysavace.cz performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

38/100

10%

LCP (Largest Contentful Paint)

Value8.9 s

1/100

25%

SI (Speed Index)

Value8.1 s

20/100

10%

TBT (Total Blocking Time)

Value1,740 ms

10/100

30%

CLS (Cumulative Layout Shift)

Value0.196

63/100

15%

TTI (Time to Interactive)

Value11.1 s

20/100

10%

Network Requests Diagram

centralnivysavace.cz

360 ms

www.centralnivysavace.cz

873 ms

smoothDivScroll.css

232 ms

excellent.css

485 ms

jquery-1.4.2.min.js

751 ms

Our browser made a total of 74 requests to load all elements on the main page. We found that 78% of them (58 requests) were addressed to the original Centralnivysavace.cz, 14% (10 requests) were made to Static.xx.fbcdn.net and 4% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (933 ms) belongs to the original domain Centralnivysavace.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 144.8 kB (47%)

Content Size

305.6 kB

After Optimization

160.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Centralnivysavace.cz main page is 305.6 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. 40% of websites need less resources to load. Javascripts take 124.1 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 27.6 kB

  • Original 37.1 kB
  • After minification 36.5 kB
  • After compression 9.5 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 27.6 kB or 74% of the original size.

Image Optimization

-11%

Potential reduce by 11.5 kB

  • Original 105.7 kB
  • After minification 94.2 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, Centralnivysavace needs image optimization as it can save up to 11.5 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-59%

Potential reduce by 73.3 kB

  • Original 124.1 kB
  • After minification 123.5 kB
  • After compression 50.8 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 73.3 kB or 59% of the original size.

CSS Optimization

-84%

Potential reduce by 32.4 kB

  • Original 38.7 kB
  • After minification 28.0 kB
  • After compression 6.3 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. Centralnivysavace.cz needs all CSS files to be minified and compressed as it can save up to 32.4 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 42 (58%)

Requests Now

72

After Optimization

30

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 72 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Centralnivysavace. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

centralnivysavace.cz

centralnivysavace.cz

360 ms

www.centralnivysavace.cz

www.centralnivysavace.cz

873 ms

smoothDivScroll.css

smoothDivScroll.css

232 ms

excellent.css

excellent.css

485 ms

jquery-1.4.2.min.js

jquery-1.4.2.min.js

751 ms

functions.js

functions.js

278 ms

audio-player.js

audio-player.js

514 ms

jquery-ui-1.8.6.custom.min.js

jquery-ui-1.8.6.custom.min.js

393 ms

jquery.smoothDivScroll.min.js

jquery.smoothDivScroll.min.js

493 ms

ga.js

ga.js

7 ms

ga.js

ga.js

280 ms

logo.gif

logo.gif

143 ms

topleft_default.jpg

topleft_default.jpg

242 ms

topright_default.jpg

topright_default.jpg

440 ms

topleft.jpg

topleft.jpg

122 ms

bginfo.gif

bginfo.gif

118 ms

home.gif

home.gif

141 ms

kosik.gif

kosik.gif

232 ms

pokladna.gif

pokladna.gif

239 ms

submit_find.gif

submit_find.gif

262 ms

label_menu.gif

label_menu.gif

257 ms

bgmenu.gif

bgmenu.gif

348 ms

label_bottom.gif

label_bottom.gif

434 ms

bgbox.gif

bgbox.gif

435 ms

label.gif

label.gif

435 ms

recenze.jpg

recenze.jpg

436 ms

favorites.gif

favorites.gif

457 ms

homepage.gif

homepage.gif

468 ms

iko_dobirka.gif

iko_dobirka.gif

469 ms

iko_prevod.gif

iko_prevod.gif

471 ms

iko_hotovost.gif

iko_hotovost.gif

491 ms

nadp.gif

nadp.gif

498 ms

Had._bez_ovl_139_116.jpg

Had._bez_ovl_139_116.jpg

570 ms

pridej_ex.gif

pridej_ex.gif

586 ms

bgzbozi_naz.gif

bgzbozi_naz.gif

587 ms

excellent.css

excellent.css

828 ms

bgzbozi_cen.gif

bgzbozi_cen.gif

608 ms

bgzbozi.gif

bgzbozi.gif

619 ms

centralni_vysavace_5122_139_116.jpg

centralni_vysavace_5122_139_116.jpg

683 ms

centralni_vysavace_5133_trubky_139_116.jpg

centralni_vysavace_5133_trubky_139_116.jpg

702 ms

hurricane_700_139_116.jpg

hurricane_700_139_116.jpg

702 ms

skladem_ano.gif

skladem_ano.gif

726 ms

bgzbozi_kos.gif

bgzbozi_kos.gif

739 ms

wallyflex_139_116.jpg

wallyflex_139_116.jpg

796 ms

centralni_vysavace_5046_sada_139_116.jpg

centralni_vysavace_5046_sada_139_116.jpg

820 ms

centralni_vysavace_5045_sada_139_116.jpg

centralni_vysavace_5045_sada_139_116.jpg

819 ms

zasuvka_retraflex_139_116.jpg

zasuvka_retraflex_139_116.jpg

822 ms

count.asp

count.asp

211 ms

__utm.gif

__utm.gif

15 ms

__utm.gif

__utm.gif

12 ms

likebox.php

likebox.php

203 ms

set_extra_139_116.jpg

set_extra_139_116.jpg

758 ms

Ikona_makarska.jpg

Ikona_makarska.jpg

804 ms

88_31_DPD.jpg

88_31_DPD.jpg

812 ms

radiopetrovgif.gif

radiopetrovgif.gif

933 ms

krokodyl%2088_31.gif

krokodyl%2088_31.gif

727 ms

bgbox_right.gif

bgbox_right.gif

736 ms

label_right.gif

label_right.gif

756 ms

label_bottom_right.gif

label_bottom_right.gif

779 ms

bgfoot_left.gif

bgfoot_left.gif

900 ms

410ucuAGgaJ.css

410ucuAGgaJ.css

46 ms

tSbl8xBI27R.css

tSbl8xBI27R.css

43 ms

q68gy-v_YMF.js

q68gy-v_YMF.js

50 ms

FJmpeSpHpjS.js

FJmpeSpHpjS.js

50 ms

0wM5s1Khldu.js

0wM5s1Khldu.js

80 ms

1bNoFZUdlYZ.js

1bNoFZUdlYZ.js

49 ms

bgfoot.gif

bgfoot.gif

812 ms

29517_401504184580_2662356_n.jpg

29517_401504184580_2662356_n.jpg

58 ms

wL6VQj7Ab77.png

wL6VQj7Ab77.png

10 ms

s7jcwEQH7Sx.png

s7jcwEQH7Sx.png

8 ms

bgfoot_right.gif

bgfoot_right.gif

725 ms

I6-MnjEovm5.js

I6-MnjEovm5.js

4 ms

pQrUxxo5oQp.js

pQrUxxo5oQp.js

6 ms

print.css

print.css

124 ms

Accessibility Review

centralnivysavace.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

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

centralnivysavace.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

Missing source maps for large first-party JavaScript

SEO Factors

centralnivysavace.cz SEO score

98

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

    WINDOWS-1250

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Centralnivysavace.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 Centralnivysavace.cz main page’s claimed encoding is windows-1250. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

centralnivysavace.cz

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