What powers fsrs.org?
Last seen Jun 2026 · 9 technologies across 8 categories
CMS
Contao
since Jan 2019
Font scripts
Google Font API
since Jan 2019
Hosting panels
Plesk
since Jan 2019
JavaScript libraries
Programming languages
Security
HSTS
since Feb 2025
Video players
Web servers
Nginx
since Jan 2019
Audience
- 97% phone
- 3% desktop
Bosnia & Herzegovina
Serbia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.09 / 10 · ranked #3,354,986 of all domains
14 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Serbian (Bosnia & Herzegovina)
- Weight: 1.5 MB · 41 requests
- Structured data: Microdata
Homepage as crawled by the HTTP Archive, Jul 2026.