What powers gjbi.cz?

Last seen Aug 2026 · 30 technologies across 19 categories

CDN

jsDelivr
since Oct 2024

CMS

WordPress
since Mar 2020

Databases

MySQL
since Mar 2020

Font Scripts

Font Awesome
since Jan 2019
Twitter Emoji (Twemoji)
since Mar 2020

JavaScript frameworks

RequireJS v2.3.5
since Aug 2022

JavaScript graphics

MathJax v2.7.9
since Oct 2024

JavaScript libraries

core-js v3.46.0
since Sep 2024
jQuery v3.7.1
since Jan 2019
jQuery Migrate v3.4.1
since Mar 2020
jQuery UI v1.13.3
since Jan 2019
Lightbox
since Sep 2024
Swiper
since Sep 2024
YUI v3.18.1
since Aug 2022

LMS

Moodle
since Aug 2022

Miscellaneous

Open Graph
since Sep 2024
RSS
since Sep 2024

Operating Systems

Debian
since Apr 2022
Windows Server
since Jan 2019

Page builders

Elementor v4.1.3
since Sep 2024

Programming languages

PHP
since Mar 2020

UI frameworks

Bootstrap v4.6.2
since Aug 2022

Video players

VideoJS
since Aug 2022

Web Frameworks

Microsoft ASP.NET v4.0.30319
since Jan 2019

Web Servers

Apache HTTP Server v2.4.62
since Apr 2022
IIS v7.5
since Jan 2019

Webmail

Microsoft 365
since Aug 2022

WordPress plugins

WP-Optimize
since Oct 2025
Yoast SEO v28.2
since Sep 2024

WordPress themes

Hello Elementor v3.4.9
since Sep 2024

AI Crawlers

robots.txt could not be read at the last check (Sep 2026), so its policy is unknown.

  • robots.txt not checked
  • llms.txt not checked
  • ai.txt not checked

See who blocks each AI crawler across the web

AI Crawlers

Policy unknown

Full breakdown

Audience

  • 62% phone
  • 38% desktop
  • Czechia

Where the site's Chrome visitors come from, largest estimated audience first.

Open Page Rank

2.25 / 10 · ranked #2,993,851 of all domains

12 referring domains · OpenPageRank

Core Web Vitals

LCP0.9 s
INP50 ms
CLS0

Real user p75, Chrome UX Report, Aug 2026.

Page

  • Language: Czech
  • Weight: 2.0 MB · 94 requests
  • WordPress theme: hello-elementor · all themes
  • Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards

Homepage as crawled by the HTTP Archive, Sep 2026.

Organisation

  • Gymnázium Jana Blahoslava Ivančice, příspěvková organizace
  • Profiles: Facebook, YouTube

From the homepage's own structured data (Sep 2026).

Infrastructure

DNS records as swept Aug 2026. How the web is hosted

Subdomains

HostTechs
www.gjbi.cz 19
moodle.gjbi.cz 13
bakalari.gjbi.cz 6

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