Wallpaperz is a free wallpaper gallery built around one annoying problem: wallpapers that never quite fit your screen.

What makes it different

- Exact-resolution downloads for 48 devices: iPhone 11 to 18 Pro Max, Galaxy S25/S26, Pixel 10, iPads, MacBooks, and monitors from 1080p to 4K ultrawide. No zoom, no stretching, no black bars.

- "What's my screen size?" detector that reads your display and matches it to a device.

- AI generator: describe any scene and get an original wallpaper in seconds.

- 120+ hand-picked and AI-crafted HD & 4K wallpapers, browsable by category, color and device.

- No sign-up to download. Fast, installable and mobile-first.

How it's built

- Next.js 15 on Cloudflare Workers, running entirely on the free tier

- Every page is prerendered for speed

- ImageKit crops each wallpaper to the exact device resolution on the fly, so there's no need to store 48 copies

- The AI generator uses Stability AI with per-user and site-wide rate limits

It's a full rebuild of a project I made earlier. Feedback welcome, especially on which devices to add next.