What powers avcr.cz?

Last seen Jun 2026 · 47 technologies across 23 categories

Analytics

Google Analytics
since Jun 2018
Plausible
since Feb 2022
Site Kit v1.35.0
since Jul 2021

CDN

Google Hosted Libraries
since Feb 2022
jsDelivr
since Dec 2022

CMS

OpenCms
since Apr 2018
WordPress
since Jul 2021

Databases

MySQL
since Jul 2021

Ecommerce

WooCommerce v4.7.2
since Jul 2021

Font scripts

Font Awesome v4.6.3
since Apr 2018
Google Font API
since Aug 2018
Typekit
since Aug 2018

JavaScript frameworks

MooTools v1.2.4
since Aug 2018
Nuxt.js
since Aug 2022
Vue.js
since Aug 2022

JavaScript libraries

core-js v3.15.1
since Aug 2022
jQuery v1.11.0
since Apr 2018
jQuery UI v1.11.4
since Apr 2018
Modernizr v2.7.2
since Apr 2018
OWL Carousel
since Apr 2018
Slick
since Jul 2021

Maps

Google Maps
since Jul 2024

Miscellaneous

Google Code Prettify
since Sep 2023
Open Graph
since Sep 2022
RSS
since Dec 2022
Webpack
since Aug 2022

Operating systems

Debian
since Aug 2018
Ubuntu
since Apr 2020

Photo galleries

PhotoSwipe
since Jun 2026

Programming languages

Java
since Jun 2018
Node.js
since Aug 2022
PHP
since Jul 2021

Retargeting

Google Remarketing Tag
since Jul 2021

Security

HSTS
since Dec 2022
reCAPTCHA
since Feb 2023

SEO

Yoast SEO v15.6.2
since Jul 2021

Tag managers

Google Tag Manager
since Jun 2018

UI frameworks

Bootstrap
since Feb 2021
ZURB Foundation v6.6.3
since Jul 2021

Video players

MediaElement.js v2.20.1
since Jun 2018
YouTube
since Jun 2018

Web frameworks

Nette Framework v3.5.3
since Feb 2023

Web server extensions

OpenSSL v1.1.1k
since Oct 2022

Web servers

Apache HTTP Server v2.4.37
since Aug 2018
Apache Tomcat
since Aug 2018
Nginx v1.14.1
since Aug 2022

Webmail

Microsoft 365
since Aug 2022

Top search keywords

KeywordPositionEst. monthly visits
swallow #10 760
ceska republika #84 350
greenland shark #68 230
roman #72 85
mass of electron #82 85
do swallows mate for life #1 79
swallow bird #28 53
johann mendel #71 43
academy of sciences of the czech republic #1 43
greenland shark lifespan #31 31
dolni vestonice #7 15
academy of science #69 14
swallow bird mate for life #1 12
insect wings #91 11
swallow nest #20 10
ethiopian highlands africa #92 8
what are swallows #9 7
trilobite larva #4 5
what is a swallow #16 5
zad academy #84 4
brazilian gypsy #3 4
jako #64 4
ke 81 #54 4
romani in brazil #3 3
origin of writing #62 3

The site's top keywords in Google (US), with the visits each one is estimated to bring per month.

Top backlinks

Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.

Audience

  • 53% phone
  • 45% desktop
  • 2% tablet
  • Czechia
  • Slovakia
  • United Kingdom
  • United States
  • Germany

Countries where the site has Chrome traffic, strongest markets first.

Open Page Rank

7.45 / 10 · ranked #20,443 of all domains

1,061 referring domains · OpenPageRank

Search traffic

1,900 est. monthly organic visits (US)

483 keywords in Google's top 30

Core Web Vitals

LCP1.3 s
INP75 ms
CLS0
TTFB800 ms

Real user p75, Chrome UX Report, Jun 2026.

Page

  • Language: Czech
  • Weight: 2.2 MB · 82 requests

Homepage as crawled by the HTTP Archive, Jul 2026.

Subdomains

HostTechs
arub.avcr.cz 18
app.ssc.avcr.cz 14
academia-industry-space-projects.avcr.cz 13
www.avcr.cz 13
pdf.avcr.cz 12
www.eu.avcr.cz 12
detskeskupiny.avcr.cz 11
dspb.avcr.cz 11
energie.avcr.cz 11
era.avcr.cz 11
avcr.cz 10
strategie.avcr.cz 10
a-fest.avcr.cz 9
b-fest.avcr.cz 9
old.ujc.avcr.cz 8
registrace.langdpt.avcr.cz 8
ujc.avcr.cz 8
volby.ssc.avcr.cz 8
ziva.avcr.cz 8
volby.kav.avcr.cz 7
ceskylid.avcr.cz 6
langdpt.avcr.cz 6
kis.avcr.cz 4
abicko.avcr.cz 3

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