What powers cerc.cz?
Last seen Jun 2026 · 13 technologies across 8 categories
Analytics
Google Analytics
since Jan 2023
JavaScript libraries
Miscellaneous
Programming languages
PHP
since Jan 2023
Security
HSTS
since Jan 2023
UI frameworks
Web servers
Nginx
since Jan 2023
Webmail
Microsoft 365
since Jan 2023
Audience
Czechia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.16 / 10 · ranked #3,196,582 of all domains
11 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Czech
- Weight: 5.6 MB · 32 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.