Tools & Wizards About Us
zsjarose.cz screenshot

Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

zsjarose.cz

Úvod | Základní škola Třebíč ulice Kapitána Jaroše 836

Page Load Speed

3.7 sec in total

First Response

396 ms

Resources Loaded

3 sec

Page Rendered

293 ms

zsjarose.cz screenshot

About Website

Visit zsjarose.cz now to see the best up-to-date Zsjarose content for Czech Republic and also check out these interesting facts you probably never knew about zsjarose.cz

Oficiální stránky ZŠ Kpt. Jaroše Třebíč poskytují aktzální informace o škole, ze života školy, pro rodiče, kontakty a další. Zjistěte více.

Visit zsjarose.cz

Key Findings

We analyzed Zsjarose.cz page load time and found that the first response time was 396 ms and then it took 3.3 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

zsjarose.cz performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.0 s

4/100

10%

LCP (Largest Contentful Paint)

Value10.3 s

0/100

25%

SI (Speed Index)

Value6.8 s

35/100

10%

TBT (Total Blocking Time)

Value410 ms

67/100

30%

CLS (Cumulative Layout Shift)

Value0.325

35/100

15%

TTI (Time to Interactive)

Value10.4 s

24/100

10%

Network Requests Diagram

zsjarose.cz

396 ms

www.zsjarose.cz

405 ms

www.zsjarose.cz

586 ms

jquery-ui-1.8.20.custom.css

479 ms

style.php

208 ms

Our browser made a total of 51 requests to load all elements on the main page. We found that 67% of them (34 requests) were addressed to the original Zsjarose.cz, 16% (8 requests) were made to Meteo.zsjarose.cz and 4% (2 requests) were made to Cdn.antee.cz. The less responsive or slowest element that took the longest time to load (710 ms) belongs to the original domain Zsjarose.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 184.1 kB (8%)

Content Size

2.2 MB

After Optimization

2.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zsjarose.cz main page is 2.2 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. 35% of websites need less resources to load. Images take 1.7 MB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 21.6 kB

  • Original 29.3 kB
  • After minification 27.9 kB
  • After compression 7.7 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 21.6 kB or 74% of the original size.

Image Optimization

-2%

Potential reduce by 28.6 kB

  • Original 1.7 MB
  • After minification 1.7 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. Zsjarose images are well optimized though.

JavaScript Optimization

-31%

Potential reduce by 116.2 kB

  • Original 369.3 kB
  • After minification 369.3 kB
  • After compression 253.1 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 116.2 kB or 31% of the original size.

CSS Optimization

-31%

Potential reduce by 17.7 kB

  • Original 56.4 kB
  • After minification 56.4 kB
  • After compression 38.7 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. Zsjarose.cz needs all CSS files to be minified and compressed as it can save up to 17.7 kB or 31% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (35%)

Requests Now

46

After Optimization

30

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 46 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zsjarose. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

zsjarose.cz

zsjarose.cz

396 ms

www.zsjarose.cz

www.zsjarose.cz

405 ms

www.zsjarose.cz

www.zsjarose.cz

586 ms

jquery-ui-1.8.20.custom.css

jquery-ui-1.8.20.custom.css

479 ms

style.php

style.php

208 ms

libs.css

libs.css

401 ms

genericons.css

genericons.css

571 ms

jquery-3.0.0.min.js

jquery-3.0.0.min.js

375 ms

jquery-migrate-3.1.0.min.js

jquery-migrate-3.1.0.min.js

282 ms

jquery-ui.min.js

jquery-ui.min.js

467 ms

jquery.ui.touch-punch.min.js

jquery.ui.touch-punch.min.js

291 ms

libs.min.js

libs.min.js

397 ms

ipo.min.js

ipo.min.js

466 ms

cs.js

cs.js

384 ms

api.js

api.js

42 ms

css2

css2

42 ms

file.php

file.php

493 ms

file.php

file.php

695 ms

file.php

file.php

509 ms

image.php

image.php

137 ms

image.php

image.php

138 ms

image.php

image.php

137 ms

image.php

image.php

137 ms

image.php

image.php

135 ms

image.php

image.php

137 ms

image.php

image.php

710 ms

image.php

image.php

338 ms

image.php

image.php

603 ms

image.php

image.php

617 ms

image.php

image.php

245 ms

image.php

image.php

245 ms

image.php

image.php

363 ms

image.php

image.php

359 ms

meteo.php

meteo.php

550 ms

image.php

image.php

424 ms

image.php

image.php

444 ms

image.php

image.php

448 ms

image.php

image.php

544 ms

pxiEyp8kv8JHgFVrFJPUdVNF.woff

pxiEyp8kv8JHgFVrFJPUdVNF.woff

103 ms

pxiByp8kv8JHgFVrLCz7V1hvEv-L.woff

pxiByp8kv8JHgFVrLCz7V1hvEv-L.woff

103 ms

piwik.js

piwik.js

657 ms

image.php

image.php

451 ms

css2

css2

21 ms

icon_pocasi.png

icon_pocasi.png

113 ms

icon_teplota.png

icon_teplota.png

212 ms

icon_tlak.png

icon_tlak.png

317 ms

icon_vlhkost.png

icon_vlhkost.png

320 ms

icon_srazky.png

icon_srazky.png

317 ms

icon_rychlostVetru.png

icon_rychlostVetru.png

318 ms

icon_smerVetru.png

icon_smerVetru.png

319 ms

piwik.php

piwik.php

207 ms

Accessibility Review

zsjarose.cz accessibility score

93

Accessibility Issues

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.

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

<frame> or <iframe> elements do not have a title

Best Practices

zsjarose.cz best practices score

75

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

SEO Factors

zsjarose.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

    UTF-8

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

zsjarose.cz

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