Tools & Wizards About Us
presto-skola.cz screenshot

Report Summary

  • 51

    Performance

    Renders faster than
    69% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

presto-skola.cz

Jazyková škola Presto - Jazykové kurzy pro firmy a jednotlivce

Page Load Speed

3.9 sec in total

First Response

289 ms

Resources Loaded

3.2 sec

Page Rendered

457 ms

presto-skola.cz screenshot

About Website

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

Jazyková škola Presto poskytuje individuální i firemní výuku jazyků již od roku 2001. Učte se se zkušenými lektory s plánem výuky na míru.

Visit presto-skola.cz

Key Findings

We analyzed Presto-skola.cz page load time and found that the first response time was 289 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

presto-skola.cz performance score

51

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value8.1 s

2/100

25%

SI (Speed Index)

Value6.8 s

34/100

10%

TBT (Total Blocking Time)

Value270 ms

82/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.5 s

47/100

10%

Network Requests Diagram

presto-skola.cz

289 ms

www.presto-skola.cz

744 ms

jquery.min.js

116 ms

jquery-migrate.min.js

241 ms

ds-script.js

358 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 80% of them (48 requests) were addressed to the original Presto-skola.cz, 20% (12 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (862 ms) belongs to the original domain Presto-skola.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 521.9 kB (75%)

Content Size

694.9 kB

After Optimization

173.1 kB

  • HTML
  • Images

In fact, the total size of Presto-skola.cz main page is 694.9 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. 55% of websites need less resources to load. HTML takes 598.8 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 521.9 kB

  • Original 598.8 kB
  • After minification 591.3 kB
  • After compression 76.9 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 521.9 kB or 87% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 96.2 kB
  • After minification 96.2 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. Presto Skola images are well optimized though.

Requests Breakdown

Number of requests can be reduced by 20 (44%)

Requests Now

45

After Optimization

25

  • Images
  • JavaScript

The browser has sent 45 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Presto Skola. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

presto-skola.cz

presto-skola.cz

289 ms

www.presto-skola.cz

www.presto-skola.cz

744 ms

jquery.min.js

jquery.min.js

116 ms

jquery-migrate.min.js

jquery-migrate.min.js

241 ms

ds-script.js

ds-script.js

358 ms

idle-timer.min.js

idle-timer.min.js

358 ms

custom.js

custom.js

357 ms

scripts.min.js

scripts.min.js

549 ms

es6-promise.auto.min.js

es6-promise.auto.min.js

388 ms

recaptcha.js

recaptcha.js

388 ms

jquery.fitvids.js

jquery.fitvids.js

454 ms

comment-reply.min.js

comment-reply.min.js

455 ms

jquery.mobile.js

jquery.mobile.js

454 ms

magnific-popup.js

magnific-popup.js

495 ms

easypiechart.js

easypiechart.js

494 ms

salvattore.js

salvattore.js

579 ms

common.js

common.js

587 ms

mediaelement-and-player.min.js

mediaelement-and-player.min.js

667 ms

mediaelement-migrate.min.js

mediaelement-migrate.min.js

600 ms

wp-mediaelement.min.js

wp-mediaelement.min.js

601 ms

motion-effects.js

motion-effects.js

665 ms

sticky-elements.js

sticky-elements.js

862 ms

lazyload.min.js

lazyload.min.js

700 ms

ua-flag.svg

ua-flag.svg

570 ms

cz_flag.svg

cz_flag.svg

568 ms

firemni_kurzy-2-2-2.jpg.webp

firemni_kurzy-2-2-2.jpg.webp

629 ms

lorenzo-moschi-1207699-unsplash-2-2.jpg.webp

lorenzo-moschi-1207699-unsplash-2-2.jpg.webp

629 ms

white-corrugated-board-904177-2.jpg.webp

white-corrugated-board-904177-2.jpg.webp

844 ms

font

font

113 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjr0B4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjr0B4uaVc.ttf

130 ms

font

font

160 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4uaVc.ttf

170 ms

font

font

170 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVc.ttf

171 ms

font

font

170 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVc.ttf

170 ms

modules.woff

modules.woff

591 ms

font

font

168 ms

memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk_RkWV4exQ.ttf

memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk_RkWV4exQ.ttf

171 ms

font

font

171 ms

memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0RkyFjWV4exQ.ttf

memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0RkyFjWV4exQ.ttf

203 ms

logo.svg

logo.svg

110 ms

IMG_6631x-2-2-2-2-1.jpg.webp

IMG_6631x-2-2-2-2-1.jpg.webp

281 ms

LOGO-AJS_obdelnik.png.webp

LOGO-AJS_obdelnik.png.webp

283 ms

TOEIC_Test-Center_Round-2-1.png

TOEIC_Test-Center_Round-2-1.png

281 ms

oxford-university-press-logo-2-1.jpg.webp

oxford-university-press-logo-2-1.jpg.webp

282 ms

logo-urs-certificari-rgb-raster-2.png

logo-urs-certificari-rgb-raster-2.png

283 ms

zkousky-ESOL-2.png.webp

zkousky-ESOL-2.png.webp

286 ms

Bureau_Veritas.svg_-2-1.png.webp

Bureau_Veritas.svg_-2-1.png.webp

285 ms

skoda2.png.webp

skoda2.png.webp

325 ms

unicredit-bank.jpg.webp

unicredit-bank.jpg.webp

326 ms

ceskyaeroholding2.png

ceskyaeroholding2.png

359 ms

csob2.png

csob2.png

367 ms

o22.png

o22.png

377 ms

accenture-logo.png.webp

accenture-logo.png.webp

778 ms

cola-logo.png.webp

cola-logo.png.webp

433 ms

cs.jpg.webp

cs.jpg.webp

432 ms

cesky-rozhlas.png.webp

cesky-rozhlas.png.webp

462 ms

2n.jpg.webp

2n.jpg.webp

471 ms

biele-2-2.png

biele-2-2.png

488 ms

Accessibility Review

presto-skola.cz accessibility score

71

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

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

presto-skola.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

Low

Detected JavaScript libraries

SEO Factors

presto-skola.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 Presto-skola.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 Presto-skola.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

presto-skola.cz

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