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
JavaScript graphics
JavaScript libraries
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
Programming languages
PHP
since Mar 2020
UI frameworks
Video players
VideoJS
since Aug 2022
Web Frameworks
Web Servers
Webmail
Microsoft 365
since Aug 2022
WordPress plugins
WP-Optimize
since Oct 2025
WordPress themes
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
AI Crawlers
Policy unknown
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
| LCP | 0.9 s |
| INP | 50 ms |
| CLS | 0 |
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
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on ITSELF Network and internet service provider. (109.105.40.246)
- Email: Microsoft 365
- Email security: SPF (hard fail), no DMARC record, DNSSEC signed
- Common Crawl link graph: rank 13,084,370, 4 hosts
- Verified with: Google, Microsoft 365
DNS records as swept Aug 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.gjbi.cz | 19 |
| moodle.gjbi.cz | 13 |
| bakalari.gjbi.cz | 6 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Twitter Emoji (Twemoji) Feb 2026
- dropped W3 Total Cache Nov 2025
- detected WP-Optimize Oct 2025