What powers ckrr.cz?
Last seen Jun 2026 · 21 technologies across 11 categories
CMS
Databases
MySQL
since May 2023
Font scripts
Google Font API
since May 2023
Twitter Emoji (Twemoji)
since May 2024
JavaScript libraries
jPlayer
since May 2023
OWL Carousel
since May 2023
Maps
Google Maps
since May 2023
Miscellaneous
Open Graph
since May 2023
RSS
since May 2023
Performance
Priority Hints
since Aug 2023
Programming languages
PHP
since May 2023
UI frameworks
Bootstrap
since May 2023
Web servers
Apache HTTP Server
since May 2023
WordPress plugins
RankMath SEO
since May 2023
Audience
Czechia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.71 / 10 · ranked #4,883,358 of all domains
4 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Czech
- Weight: 1.8 MB · 89 requests
- WordPress theme: cherryframework (child: ckrr) · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
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Recent changes
- dropped SWFObject May 2026
- detected Twitter Emoji (Twemoji) Apr 2026