What powers 4qr.pl?
Last seen Jun 2026 · 17 technologies across 10 categories
Caching
WP Rocket
since May 2023
CMS
Databases
MySQL
since May 2023
Font scripts
Google Font API
since May 2023
JavaScript libraries
Swiper
since May 2023
Miscellaneous
Programming languages
PHP
since May 2023
Web servers
Apache HTTP Server
since May 2023
WordPress plugins
WordPress themes
Audience
Poland
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
0.39 / 10 · ranked #37,788,302 of all domains
0 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.1 s |
| CLS | 0 |
| TTFB | 1600 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Polish (Poland)
- Weight: 60.2 MB · 115 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| rdza.4qr.pl | 17 |
| zest.4qr.pl | 17 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Nginx Mar 2026
- detected Apache HTTP Server Jan 2026
- dropped Apache HTTP Server Nov 2025
- detected HTTP/3 Oct 2025
- detected Nginx Oct 2025