What powers ok99.cz?
Last seen Jun 2026 · 15 technologies across 10 categories
Analytics
Google Analytics
since Jan 2025
Editors
Microsoft Word
since Nov 2022
Font scripts
Google Font API
since Aug 2022
JavaScript libraries
Miscellaneous
Programming languages
PHP
since Aug 2022
UI frameworks
Bootstrap
since Nov 2021
Tailwind CSS
since May 2023
Video players
YouTube
since Apr 2025
Web servers
Nginx
since Nov 2021
Webmail
Google Workspace
since Aug 2022
Audience
Czechia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.83 / 10 · ranked #1,921,219 of all domains
19 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Czech
- Weight: 9.5 MB · 31 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.ok99.cz | 9 |
| jp2024.ok99.cz | 6 |
| mcr2022.ok99.cz | 6 |
| mcr2025.ok99.cz | 6 |
| cvc2023.ok99.cz | 5 |
| cvc2025.ok99.cz | 5 |
| mcr2021.ok99.cz | 4 |
| rog2024.ok99.cz | 4 |
Full technology history →
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Recent changes
- detected HTTP/3 Apr 2026