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3dconverter

Free

• Updated Aug 13, 2026, 09:14 AM

3DConverter.

Use Cases ▼

Convert GLB files to STL for 3D printing

Compress GLB models for faster web loading

Repair STL files before slicing

Convert OBJ to 3MF for modern slicers

Prepare product previews as self-contained GLB for ecommerce

Exchange static meshes between DCC tools via OBJ

What Problem It Solves ▼

3DConverter.online solves the need to convert common 3D mesh formats without uploading sensitive design files to a server. Users can convert, compress, or repair STL files locally in the browser, preserving privacy, avoiding account creation, and receiving clear guidance on format limitations.

Key Features ▼

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100% browser-side processing ensures privacy

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No sign-up or account required

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Free to use with files up to 150 MB

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Clearly documents format limitations and preservation

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Includes specialized GLB compression and STL repair

Overview

3DConverter.online is a free browser-based tool that performs 3D file conversion directly on the user's device. It supports a deliberately limited set of mesh formats: STL, OBJ, FBX, GLB, and 3MF, with conversion directions such as 3MF to STL, GLB to OBJ, GLB to STL, FBX to GLB, OBJ to STL, and STL to 3MF. All processing happens locally in the browser, and files are never uploaded or stored.

Full Description ▼

The tool provides a model preview before conversion and documents exactly what each destination format can preserve, avoiding false claims about CAD, proprietary project, or animation preservation. It also offers specialized utilities including a private GLB compressor and an STL repair tool. The maximum file size is 150 MB, and no account or sign-in is required.

It is designed for practical workflows such as sending a prototype to a slicer for 3D printing, exchanging static meshes between modeling and visualization tools, and publishing self-contained models for ecommerce viewers or web AR. The interface is available at 3dconverter.online.