What powers 4book.app?
Last seen Jun 2026 · 12 technologies across 9 categories
Authentication
NextAuth.js
since Apr 2026
Development
Turbopack
since Apr 2026
JavaScript frameworks
Miscellaneous
Webpack
since Apr 2026
PaaS
Performance
Priority Hints
since Apr 2026
Programming languages
Node.js
since Apr 2026
Security
HSTS
since Apr 2026
UI frameworks
Tailwind CSS
since Apr 2026
Audience
- 100% phone
Italy
Countries where the site has Chrome traffic, strongest markets first.
Core Web Vitals
| LCP | 5.5 s |
| INP | 175 ms |
| CLS | 0.15 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Italian
- CDN: Vercel
- Weight: 0.2 MB · 14 requests
Homepage as crawled by the HTTP Archive, Jul 2026.