What powers 4window.cz?
Last seen Jun 2026 · 22 technologies across 13 categories
Advertising
Microsoft Advertising
since Oct 2024
Analytics
Google Analytics
since Sep 2024
Microsoft Clarity
since Aug 2025
Authentication
Facebook Login
since Sep 2024
Cookie compliance
Ecommerce
Cart Functionality
since Apr 2026
Shoptet
since Sep 2024
JavaScript libraries
Live chat
Miscellaneous
Performance
Priority Hints
since Apr 2025
Programming languages
PHP
since Sep 2024
Tag managers
Google Tag Manager
since Sep 2024
UI frameworks
Web servers
Audience
- 75% desktop
- 25% phone
Czechia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.16 / 10 · ranked #10,369,317 of all domains
2 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 125 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Czech
- Weight: 1.4 MB · 79 requests
- Structured data: Microdata, OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
Report an incorrect detection
Recent changes
- detected HTTP/3 May 2026
- detected OpenResty May 2026
- detected Cart Functionality Apr 2026
- dropped PWA Jan 2026
- detected Microsoft Clarity Aug 2025