Tools & Wizards About Us
roztoc.cz screenshot

Report Summary

  • 21

    Performance

    Renders faster than
    39% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

roztoc.cz

Sdružení Roztoč – Kroužky, kurzy, akce a lidové slavnosti v Roztokách

Page Load Speed

9.2 sec in total

First Response

485 ms

Resources Loaded

8.3 sec

Page Rendered

372 ms

roztoc.cz screenshot

About Website

Welcome to roztoc.cz homepage info - get ready to check Roztoc best content for Czech Republic right away, or after learning these important things about roztoc.cz

Spektrum kroužků a kurzů pro děti i dospělé, kulturní akce, lidové slavnosti a další kulturní a společenské dění v Roztokách.

Visit roztoc.cz

Key Findings

We analyzed Roztoc.cz page load time and found that the first response time was 485 ms and then it took 8.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

roztoc.cz performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value5.3 s

22/100

25%

SI (Speed Index)

Value12.6 s

3/100

10%

TBT (Total Blocking Time)

Value7,200 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.108

88/100

15%

TTI (Time to Interactive)

Value14.8 s

8/100

10%

Network Requests Diagram

roztoc.cz

485 ms

www.roztoc.cz

1252 ms

cv.css

289 ms

cvpro.min.css

398 ms

fontawesome-all.min.css

391 ms

Our browser made a total of 54 requests to load all elements on the main page. We found that 96% of them (52 requests) were addressed to the original Roztoc.cz, 2% (1 request) were made to Googletagmanager.com and 2% (1 request) were made to D70shl7vidtft.cloudfront.net. The less responsive or slowest element that took the longest time to load (4.4 sec) belongs to the original domain Roztoc.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 192.7 kB (15%)

Content Size

1.3 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Roztoc.cz main page is 1.3 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. 50% of websites need less resources to load. Images take 854.7 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 173.7 kB

  • Original 210.3 kB
  • After minification 208.1 kB
  • After compression 36.7 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 173.7 kB or 83% of the original size.

Image Optimization

-2%

Potential reduce by 14.7 kB

  • Original 854.7 kB
  • After minification 839.9 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. Roztoc images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 2.5 kB

  • Original 113.0 kB
  • After minification 113.0 kB
  • After compression 110.5 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 1.8 kB

  • Original 84.2 kB
  • After minification 84.2 kB
  • After compression 82.5 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. Roztoc.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 28 (57%)

Requests Now

49

After Optimization

21

  • Images
  • JavaScript
  • CSS

The browser has sent 49 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Roztoc. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

roztoc.cz

roztoc.cz

485 ms

www.roztoc.cz

www.roztoc.cz

1252 ms

cv.css

cv.css

289 ms

cvpro.min.css

cvpro.min.css

398 ms

fontawesome-all.min.css

fontawesome-all.min.css

391 ms

v4-shims.min.css

v4-shims.min.css

296 ms

front.min.css

front.min.css

295 ms

splide.min.css

splide.min.css

379 ms

baguettebox.min.css

baguettebox.min.css

477 ms

photonic.min.css

photonic.min.css

484 ms

style.css

style.css

486 ms

jquery.min.js

jquery.min.js

675 ms

jquery-migrate.min.js

jquery-migrate.min.js

583 ms

ie-compat.min.js

ie-compat.min.js

664 ms

js

js

79 ms

shortcodes-legacy.css

shortcodes-legacy.css

678 ms

shortcodes_responsive.css

shortcodes_responsive.css

691 ms

html5shiv.min.js

html5shiv.min.js

691 ms

respond.js

respond.js

787 ms

cv.js

cv.js

865 ms

cvpro.min.js

cvpro.min.js

1075 ms

front.min.js

front.min.js

1064 ms

scripts.min.js

scripts.min.js

1172 ms

jquery.fitvids.js

jquery.fitvids.js

978 ms

magnific-popup.js

magnific-popup.js

1074 ms

salvattore.js

salvattore.js

1151 ms

common.js

common.js

1263 ms

wp-embed.min.js

wp-embed.min.js

1347 ms

et_shortcodes_frontend.js

et_shortcodes_frontend.js

1359 ms

style.css

style.css

964 ms

roztoc_logo_HORIZONTALNI_RGB_2019-1.png

roztoc_logo_HORIZONTALNI_RGB_2019-1.png

427 ms

cirkus-480x319.jpg

cirkus-480x319.jpg

350 ms

roztoc_oddelovac_tecky.png

roztoc_oddelovac_tecky.png

448 ms

akce-kytky-400x250.jpg

akce-kytky-400x250.jpg

541 ms

svatek-svetel-2-400x250.jpg

svatek-svetel-2-400x250.jpg

540 ms

akce-knihy-400x250.jpg

akce-knihy-400x250.jpg

541 ms

paul-zoetemeijer-ejvLhF-TTo0-unsplash-400x250.jpg

paul-zoetemeijer-ejvLhF-TTo0-unsplash-400x250.jpg

637 ms

2021-02-Masopust-Hromadko-25-400x250.jpg

2021-02-Masopust-Hromadko-25-400x250.jpg

903 ms

20190216-DSC_8282-400x250.jpg

20190216-DSC_8282-400x250.jpg

827 ms

zed.jpg

zed.jpg

1391 ms

sedmihlasek-logo-1.jpg

sedmihlasek-logo-1.jpg

1014 ms

Opusteni-ctverec.jpg

Opusteni-ctverec.jpg

1114 ms

roztoky.min_.svg

roztoky.min_.svg

1108 ms

logo-kraj.min_.svg

logo-kraj.min_.svg

1113 ms

letiste.svg

letiste.svg

1188 ms

Nadace_Via_bez-pozadi-400x284.png

Nadace_Via_bez-pozadi-400x284.png

1301 ms

Logo_MSMT.png

Logo_MSMT.png

1396 ms

logo-sfk-scaled.jpg

logo-sfk-scaled.jpg

1679 ms

roztoc_dekujeme.gif

roztoc_dekujeme.gif

4419 ms

Pepi-Black.otf

Pepi-Black.otf

1554 ms

Rudi-Black.otf

Rudi-Black.otf

1766 ms

modules.ttf

modules.ttf

1857 ms

widget.js

widget.js

245 ms

style.min.css

style.min.css

97 ms

Accessibility Review

roztoc.cz accessibility score

81

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

roztoc.cz best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

roztoc.cz SEO score

91

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

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 Roztoc.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 Roztoc.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

roztoc.cz

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