About Polyvia3D

Polyvia3D is a free online tool for converting 3D model files between popular formats. We support OBJ, STL, and GLB with more formats planned for the future.

Our Mission

We believe 3D format conversion should be simple, fast, and accessible to everyone. Whether you are a 3D printing enthusiast, a web developer building AR/VR experiences, or a digital artist working across multiple tools, Polyvia3D makes format conversion effortless.

How It Works

Polyvia3D uses WebAssembly (WASM) technology to process your 3D files entirely within your web browser. This means your files are never uploaded to any server. The conversion engine runs at near-native speed, delivering fast results without compromising your privacy.

Privacy First

Your files never leave your device. We do not receive, store, or transmit any of the files you convert. There is no account required, no tracking of your conversions, and no data collection beyond standard web analytics.

Supported Formats

• OBJ — Universal 3D interchange format for modeling and DCC tools
• STL — Standard format for 3D printing and slicing software
• GLB — Binary glTF format for Web3D, AR/VR, and real-time rendering

Get Started

Ready to convert your 3D files? Visit our homepage to see all available conversion tools, or jump directly to one of our most popular converters:

• OBJ to STL for 3D printing
• OBJ to GLB for Web3D
• STL to OBJ for editing