GLB → OBJ Converter
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Understanding GLB and OBJ 3D Formats
Working with 3D files often means navigating a maze of formats, each designed for a slightly different purpose. Two of the most commonly encountered are GLB and OBJ — and understanding when to use each can save you hours of frustration.
The GLB format (GL Binary) is the compact, binary version of glTF — the "JPEG of 3D files" according to the Khronos Group. It bundles geometry, textures, animations, and PBR material data into a single self-contained binary file. This makes GLB ideal for web delivery, AR experiences, game engines, and any scenario where you need a single small file that loads fast. Common tools that export GLB include Blender, Sketchfab, Autodesk, and most modern CAD platforms.
The OBJ format, created by Wavefront Technologies, takes the opposite philosophy: simplicity and universal compatibility. It's a plain text file that stores vertex positions, texture coordinates, normals, and polygon faces. Almost every 3D application — from ancient legacy software to the newest tools — can import OBJ. When you need to bring a 3D model into software that doesn't know about glTF/GLB, OBJ is almost always the safe choice.
The GLB to OBJ conversion is particularly useful for teams that receive 3D assets from web pipelines (Sketchfab downloads, AR exports, game asset pipelines) and need to bring them into traditional 3D applications like Maya, 3ds Max, Cinema 4D, or older CAD software. The converter extracts the mesh geometry and generates both an OBJ file and a companion MTL material file.
Our free browser-based tool handles this conversion entirely on your device using Three.js — one of the most battle-tested 3D libraries available. Your file never leaves your browser, which means complete privacy and no file-size restrictions imposed by server quotas. You also get a live interactive 3D preview so you can visually verify the mesh before downloading. Options like scale factor adjustment, up-axis swapping, and mesh merging give you fine control over the output without needing to open a desktop application.
Whether you're a game developer extracting assets, an architect converting client deliverables, or a designer prepping a model for 3D printing — this GLB to OBJ converter is built to be fast, reliable, and genuinely useful in production workflows.