What powers gjj.cz?
Last seen Aug 2026 · 31 technologies across 16 categories
CMS
Databases
Font scripts
JavaScript frameworks
JavaScript libraries
Miscellaneous
Operating Systems
Page builders
Photo galleries
Programming languages
UI frameworks
Video players
Web Frameworks
Web Servers
Webmail
WordPress plugins
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 74% phone
- 26% desktop
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.80 / 10 · ranked #1,987,041 of all domains
19 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.9 s |
| CLS | 0 |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 5.5 MB · 174 requests
- WordPress theme: dt-the7 (child: dt-the7-child) · all themes
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Gymnázium Josefa Jungmanna
- Founded: 2003
- Country: Czech Republic
From Wikidata (CC0).
Infrastructure
- Hosted on WEDOS-GLOBAL (185.8.237.6, IPv6)
- DNS: wedos.com
- Email: Microsoft 365
- Email security: SPF (hard fail), no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 8,936,725, 4 hosts
- Verified with: Apple Business
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.gjj.cz | 27 |
| bakalari.gjj.cz | 6 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Lightbox Jun 2026
- dropped OWL Carousel Jun 2026
- detected HTTP/3 Mar 2026
- dropped Nginx Mar 2026
- detected Twitter Emoji (Twemoji) Mar 2026
- detected Apache HTTP Server Feb 2026
- dropped HTTP/3 Oct 2025