About Fast3D

Fast3D is a free online 3D model viewer that lets anyone open, inspect, and share 3D files directly in the browser — no plugins or desktop software required.

Our Mission

We believe viewing 3D models should be as simple as opening a PDF. Whether you are reviewing a product design, checking a 3D print, or sharing a model with a client, Fast3D gives you a fast, accessible way to preview files instantly.

What Fast3D Offers

  • Drag-and-drop or file picker upload for quick previews
  • Support for GLB, GLTF, OBJ, STL, FBX, and PLY formats
  • Interactive 3D controls — rotate, pan, and zoom
  • Model statistics including vertices and triangle count
  • 100% free with no account required

Privacy First

Your files are processed locally in your browser whenever possible. We designed Fast3D with privacy in mind so you can preview sensitive design files without uploading them to a remote server.

Who It's For

Fast3D is built for 3D artists, product designers, game developers, architects, engineers, educators, and anyone who needs a quick way to open a 3D file without launching heavy desktop software.

Start Viewing 3D Models

Upload a file or explore the default model on our homepage.

Open 3D Viewer