Free 3D file viewer for STL, GLB, OBJ, FBX, STEP, IGES and more. Direct replacement for Microsoft 3D Viewer (removed July 2026). Works on Windows, Android, iOS, and in any browser. No account, no upload — files stay on your device.
Upload a JPG, PNG, or PDF of any floor plan — phone photo, scanned blueprint, or CAD export. Get a fully interactive 3D model in under two minutes. Walk through every room at eye level, drag in furniture with real-world dimensions, swap walls and floors, share a live 3D link that opens in any browser, or export STL for 3D printing. Built for homeowners, designers, agents, architects, and makers. Free plan included — no card required. Web, iOS, Android.
Ritn3D converts 2D floor plans into interactive 3D interior models — automatically. Upload a PDF, JPG, or PNG of any floor plan. AI detects walls, doors, and windows, then generates a full 3D walkthrough model in under two minutes.
No CAD skills. No 3D software.
What you get:
- Interactive 3D viewer with orbit and walk-through modes
- Shareable 3D links for clients and collaborators
- STL export for 3D printing physical scale models (1:50 to 1:500)
- GLB download for use in any 3D tool
