Tools & Wizards About Us
ursa.cz screenshot

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

ursa.cz

Tepelná izolace, zvuková izolace, protipožární izolace - URSA CZ

Page Load Speed

6.1 sec in total

First Response

765 ms

Resources Loaded

4.8 sec

Page Rendered

500 ms

ursa.cz screenshot

About Website

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

URSA - vyrábíme minerální izolace a extrudovaný polystyren pro zateplení domu tedy zateplení fasády, zateplení střechy, zateplení podkroví, zateplení podlahy, akustickou izolaci a další použití.

Visit ursa.cz

Key Findings

We analyzed Ursa.cz page load time and found that the first response time was 765 ms and then it took 5.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

ursa.cz performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.7 s

0/100

10%

LCP (Largest Contentful Paint)

Value15.2 s

0/100

25%

SI (Speed Index)

Value12.1 s

3/100

10%

TBT (Total Blocking Time)

Value1,210 ms

20/100

30%

CLS (Cumulative Layout Shift)

Value0.235

53/100

15%

TTI (Time to Interactive)

Value13.9 s

10/100

10%

Network Requests Diagram

www.ursa.cz

765 ms

loader.js

624 ms

5qacy.css

321 ms

fuv0xwf.css

163 ms

5qacy.css

537 ms

Our browser made a total of 98 requests to load all elements on the main page. We found that 69% of them (68 requests) were addressed to the original Ursa.cz, 9% (9 requests) were made to Cdn.cookielaw.org and 8% (8 requests) were made to Api.mapy.cz. The less responsive or slowest element that took the longest time to load (986 ms) belongs to the original domain Ursa.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 197.0 kB (18%)

Content Size

1.1 MB

After Optimization

889.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ursa.cz main page is 1.1 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 363.1 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 191.4 kB

  • Original 233.4 kB
  • After minification 226.9 kB
  • After compression 42.0 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 191.4 kB or 82% of the original size.

Image Optimization

-0%

Potential reduce by 448 B

  • Original 363.1 kB
  • After minification 362.6 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. URSA images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 2.2 kB

  • Original 305.2 kB
  • After minification 305.2 kB
  • After compression 303.0 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

-2%

Potential reduce by 2.9 kB

  • Original 184.4 kB
  • After minification 184.4 kB
  • After compression 181.5 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. Ursa.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 49 (82%)

Requests Now

60

After Optimization

11

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 60 CSS, Javascripts, AJAX and image requests in order to completely render the main page of URSA. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 39 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.ursa.cz

www.ursa.cz

765 ms

loader.js

loader.js

624 ms

5qacy.css

5qacy.css

321 ms

fuv0xwf.css

fuv0xwf.css

163 ms

5qacy.css

5qacy.css

537 ms

css

css

35 ms

5qacy.js

5qacy.js

423 ms

5qacy.css

5qacy.css

322 ms

5qacy.js

5qacy.js

321 ms

jquery-ui.css

jquery-ui.css

20 ms

jquery-ui.js

jquery-ui.js

27 ms

fuv0xwf.css

fuv0xwf.css

275 ms

otSDKStub.js

otSDKStub.js

30 ms

5qacy.js

5qacy.js

437 ms

122.js

122.js

322 ms

7350.js

7350.js

324 ms

131.js

131.js

325 ms

6268.js

6268.js

426 ms

5qbhn.css

5qbhn.css

430 ms

coblocks-animation.js

coblocks-animation.js

429 ms

tiny-swiper.js

tiny-swiper.js

430 ms

coblocks-tinyswiper-initializer.js

coblocks-tinyswiper-initializer.js

531 ms

coblocks-post-carousel.js

coblocks-post-carousel.js

534 ms

coblocks-events.js

coblocks-events.js

535 ms

wp-polyfill.min.js

wp-polyfill.min.js

541 ms

dom-ready.min.js

dom-ready.min.js

535 ms

coblocks-counter.js

coblocks-counter.js

540 ms

coblocks-lightbox.js

coblocks-lightbox.js

635 ms

popper.min.js

popper.min.js

638 ms

bootstrap.min.js

bootstrap.min.js

640 ms

theme-script.min.js

theme-script.min.js

639 ms

skip-link-focus-fix.min.js

skip-link-focus-fix.min.js

646 ms

wp-embed.min.js

wp-embed.min.js

645 ms

script.js

script.js

740 ms

virtual-key.js

virtual-key.js

97 ms

smap-jak.js

smap-jak.js

484 ms

config.js

config.js

383 ms

suggest.js

suggest.js

290 ms

cs.js

cs.js

289 ms

smap-jak.css

smap-jak.css

287 ms

suggest.css

suggest.css

289 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

193 ms

p.css

p.css

31 ms

093f0050-0c8c-4ea4-850b-6d897f2f0fd8.json

093f0050-0c8c-4ea4-850b-6d897f2f0fd8.json

182 ms

gtm.js

gtm.js

272 ms

hqdefault.jpg

hqdefault.jpg

297 ms

ursa-logo-e1608282921653.png

ursa-logo-e1608282921653.png

221 ms

ursa-fono-slider2.webp

ursa-fono-slider2.webp

352 ms

kalkulator3.png

kalkulator3.png

571 ms

prirucky-slider.webp

prirucky-slider.webp

357 ms

slider-drevostavby3.webp

slider-drevostavby3.webp

355 ms

ico-palec-nahoru.webp

ico-palec-nahoru.webp

220 ms

ico-domecek.webp

ico-domecek.webp

358 ms

iko-news1.webp

iko-news1.webp

357 ms

ikona-dotace-hp.webp

ikona-dotace-hp.webp

421 ms

menu-glasswool.webp

menu-glasswool.webp

421 ms

menu-pureone.webp

menu-pureone.webp

437 ms

ursa-purefloc-hp-kategorie-1.png

ursa-purefloc-hp-kategorie-1.png

642 ms

menu-xps.webp

menu-xps.webp

437 ms

ursa-seco-produkty-hp.webp

ursa-seco-produkty-hp.webp

501 ms

nzu-perex-new.webp

nzu-perex-new.webp

504 ms

sbti-perexl.webp

sbti-perexl.webp

543 ms

vyrocni-zprava-etex-perex.webp

vyrocni-zprava-etex-perex.webp

543 ms

sipka.svg

sipka.svg

607 ms

baner-footer-new.webp

baner-footer-new.webp

609 ms

jsme-clenem1.webp

jsme-clenem1.webp

648 ms

etex-logo.webp

etex-logo.webp

649 ms

fb.webp

fb.webp

676 ms

yb-logo.webp

yb-logo.webp

712 ms

05-proc-izolovat1.webp

05-proc-izolovat1.webp

638 ms

06-reference1.webp

06-reference1.webp

671 ms

hp-novinky-baner.webp

hp-novinky-baner.webp

677 ms

nzu-hp-img-1.webp

nzu-hp-img-1.webp

677 ms

KFOlCnqEu92Fr1MmSU5fBBc-.woff

KFOlCnqEu92Fr1MmSU5fBBc-.woff

204 ms

KFOmCnqEu92Fr1Mu4mxM.woff

KFOmCnqEu92Fr1Mu4mxM.woff

204 ms

d

d

205 ms

d

d

139 ms

d

d

317 ms

chevin_light.otf

chevin_light.otf

702 ms

otBannerSdk.js

otBannerSdk.js

120 ms

wp-polyfill-fetch.min.js

wp-polyfill-fetch.min.js

606 ms

wp-polyfill-dom-rect.min.js

wp-polyfill-dom-rect.min.js

607 ms

wp-polyfill-url.min.js

wp-polyfill-url.min.js

645 ms

wp-polyfill-formdata.min.js

wp-polyfill-formdata.min.js

653 ms

fa-solid-900.ttf

fa-solid-900.ttf

986 ms

fa-regular-400.ttf

fa-regular-400.ttf

735 ms

fa-brands-400.ttf

fa-brands-400.ttf

921 ms

cs.json

cs.json

53 ms

otCenterRounded.json

otCenterRounded.json

40 ms

otPcCenter.json

otPcCenter.json

54 ms

otCookieSettingsButton.json

otCookieSettingsButton.json

59 ms

otCommonStyles.css

otCommonStyles.css

55 ms

ot_company_logo.png

ot_company_logo.png

36 ms

nzu-perex-new.webp

nzu-perex-new.webp

108 ms

sbti-perexl.webp

sbti-perexl.webp

106 ms

vyrocni-zprava-etex-perex.webp

vyrocni-zprava-etex-perex.webp

107 ms

fa-solid-900.woff

fa-solid-900.woff

213 ms

fa-regular-400.woff

fa-regular-400.woff

212 ms

Accessibility Review

ursa.cz accessibility score

81

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

Image elements do not have [alt] attributes

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

ursa.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

ursa.cz SEO score

86

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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

    CS

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ursa.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 Ursa.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

ursa.cz

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