Tools & Wizards About Us
ockovacicentrum.cz screenshot

Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

ockovacicentrum.cz

Očkování proti nemocem v ČR i v zahraničí | AVENIER - Očkování a cestovní medicína

Page Load Speed

4.7 sec in total

First Response

434 ms

Resources Loaded

3.6 sec

Page Rendered

700 ms

ockovacicentrum.cz screenshot

About Website

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

Objednejte se online na očkování v 22 očkovacích centrech v ČR, na konkrétní hodinu bez čekání. Očkování, předcestovní konzultace i doplňkový sortiment. Bezpečná cesta začíná u nás.

Visit ockovacicentrum.cz

Key Findings

We analyzed Ockovacicentrum.cz page load time and found that the first response time was 434 ms and then it took 4.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

ockovacicentrum.cz performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value23.7 s

0/100

25%

SI (Speed Index)

Value10.0 s

9/100

10%

TBT (Total Blocking Time)

Value630 ms

47/100

30%

CLS (Cumulative Layout Shift)

Value0.007

100/100

15%

TTI (Time to Interactive)

Value12.7 s

13/100

10%

Network Requests Diagram

ockovacicentrum.cz

434 ms

www.ockovacicentrum.cz

1025 ms

css2

36 ms

styles.css

588 ms

libs.min.css

675 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 69% of them (31 requests) were addressed to the original Ockovacicentrum.cz, 9% (4 requests) were made to Fonts.gstatic.com and 7% (3 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Ockovacicentrum.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 788.9 kB (10%)

Content Size

7.9 MB

After Optimization

7.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ockovacicentrum.cz main page is 7.9 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. 55% of websites need less resources to load. Images take 7.4 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 55.1 kB

  • Original 65.1 kB
  • After minification 44.1 kB
  • After compression 10.0 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. This page needs HTML code to be minified as it can gain 21.0 kB, which is 32% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 55.1 kB or 85% of the original size.

Image Optimization

-5%

Potential reduce by 398.5 kB

  • Original 7.4 MB
  • After minification 7.0 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. Ockovacicentrum images are well optimized though.

JavaScript Optimization

-52%

Potential reduce by 66.6 kB

  • Original 129.3 kB
  • After minification 126.2 kB
  • After compression 62.7 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 66.6 kB or 52% of the original size.

CSS Optimization

-85%

Potential reduce by 268.6 kB

  • Original 315.4 kB
  • After minification 315.1 kB
  • After compression 46.7 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. Ockovacicentrum.cz needs all CSS files to be minified and compressed as it can save up to 268.6 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (31%)

Requests Now

39

After Optimization

27

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ockovacicentrum. 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 as a result speed up the page load time.

Network Requests Diagram

ockovacicentrum.cz

ockovacicentrum.cz

434 ms

www.ockovacicentrum.cz

www.ockovacicentrum.cz

1025 ms

css2

css2

36 ms

styles.css

styles.css

588 ms

libs.min.css

libs.min.css

675 ms

jquery.min.js

jquery.min.js

684 ms

jquery.cookie.js

jquery.cookie.js

460 ms

_common.js

_common.js

239 ms

_userlogin.js

_userlogin.js

339 ms

runtime.js

runtime.js

367 ms

scripts.js

scripts.js

549 ms

gtm.js

gtm.js

163 ms

avenier-logo.svg

avenier-logo.svg

232 ms

svg-sprite.svg

svg-sprite.svg

236 ms

foto_globus_docent.png

foto_globus_docent.png

1642 ms

drops-bg-guide.svg

drops-bg-guide.svg

233 ms

virus.svg

virus.svg

237 ms

destination.svg

destination.svg

234 ms

center.svg

center.svg

369 ms

alert.svg

alert.svg

367 ms

drops-bg-right.svg

drops-bg-right.svg

368 ms

service-1.png

service-1.png

816 ms

service-2.png

service-2.png

774 ms

service-3.png

service-3.png

503 ms

clock.svg

clock.svg

489 ms

book.svg

book.svg

490 ms

vaccine.svg

vaccine.svg

601 ms

dr_dvorak_butt_web_akt.png

dr_dvorak_butt_web_akt.png

1171 ms

doc_madar_web_but_akt.png

doc_madar_web_but_akt.png

748 ms

foto_web_tkadlecova_button_.png

foto_web_tkadlecova_button_.png

1050 ms

foto_web_sevcikova_button_vid.png

foto_web_sevcikova_button_vid.png

880 ms

foto_web_hiemer_button_.png

foto_web_hiemer_button_.png

1017 ms

dr_kochova_web_akt.png

dr_kochova_web_akt.png

1257 ms

memWYa2wxmKQyPMrZX79wwYZQMhsyuShhKMjjbU9uXuA71rCosg.ttf

memWYa2wxmKQyPMrZX79wwYZQMhsyuShhKMjjbU9uXuA71rCosg.ttf

20 ms

memWYa2wxmKQyPMrZX79wwYZQMhsyuShhKMjjbU9uXuA72jCosg.ttf

memWYa2wxmKQyPMrZX79wwYZQMhsyuShhKMjjbU9uXuA72jCosg.ttf

116 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1y4n.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1y4n.ttf

43 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0C4n.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0C4n.ttf

52 ms

js

js

60 ms

uc.js

uc.js

165 ms

hotjar-3094375.js

hotjar-3094375.js

162 ms

landing

landing

217 ms

0207.js

0207.js

201 ms

destination

destination

153 ms

modules.305879d9d5e96288a7f4.js

modules.305879d9d5e96288a7f4.js

53 ms

www.ockovacicentrum.cz.json

www.ockovacicentrum.cz.json

19 ms

Accessibility Review

ockovacicentrum.cz accessibility score

88

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.

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

ockovacicentrum.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

High

Page has valid source maps

SEO Factors

ockovacicentrum.cz SEO score

93

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

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 Ockovacicentrum.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 Ockovacicentrum.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

ockovacicentrum.cz

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