3D Converter

Extract GLB Geometry into the OFF Research Format

Convert binary GLB assets to OFF (Object File Format) and make the geometry accessible in MeshLab, CGAL, OpenMesh, and any computational geometry or academic tool that reads the simple ASCII OFF structure.

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Extract GLB Geometry into the OFF Research Format
Free Tool

Convert GLB to OFF

Upload a GLB file and download the converted OFF — all processing happens on the server.

Drop your GLB file here

or click to browse

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Accepts .glb files

A GLB model converted to OFF and opened in MeshLab
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From Web Standard to Research Format

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An OFF file structure displayed in a text editor alongside MeshLab
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Clean Vertex and Face Lists

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A developer running a CGAL mesh algorithm on an OFF file from a GLB source
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CGAL, OpenMesh, and Algorithm Ready

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How It Works

How to Convert GLB to OFF

1

Upload Your GLB File

Drag and drop a GLB file into the upload zone or click to browse. Files up to 100 MB are supported.

2

Sign In and Convert

Sign in to start the conversion. The server extracts the triangulated geometry from the GLB mesh and writes a clean ASCII OFF file with vertex and face lists.

3

Download the OFF

Once ready, click Download. The OFF file is immediately usable in MeshLab, CGAL, OpenMesh, and any computational geometry or research tool that reads the format.

Deep Dive

GLB and OFF: Real-Time Delivery vs. Research Format

GLB and OFF: Real-Time Delivery vs. Research Format
01

GLB: Binary glTF for Real-Time Delivery

GLB is the binary container for glTF, the Khronos standard for real-time 3D. It packs JSON scene data, geometry buffers, and textures into a single compact file optimized for fast web delivery, browser rendering, and game engine import.

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OFF: Minimal Academic Geometry Format

The Object File Format is a simple ASCII format for representing polygonal meshes. It stores vertex coordinates and face indices in a human-readable structure with optional per-vertex color columns. It is widely used in computational geometry research and tools like MeshLab, CGAL, and OpenMesh.

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When to Convert GLB to OFF

Convert when you need to process a web or game asset in a computational geometry tool that reads OFF, when you want to inspect or manually edit mesh geometry in a text editor, or when an academic algorithm or research pipeline requires OFF as its mesh input format.

Benefits

Why Use It

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No Software to Install

The conversion runs on the server. No Blender Python scripts, no MeshLab batch processing, no local Assimp CLI pipelines needed. Upload and download directly from your browser.

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Human-Readable ASCII Output

OFF is a plain-text format — vertex coordinates and face indices in a simple structure you can inspect in any text editor, parse with a few lines of code, or feed into custom geometry algorithms.

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Research Tool Compatible

MeshLab, CGAL, OpenMesh, and most computational geometry libraries read OFF natively. The converted file plugs directly into mesh processing, analysis, and academic workflows.

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Web to Research Pipeline

GLB is the web delivery standard. OFF is the research community's input format. Converting GLB to OFF bridges game, web, and AR assets into computational geometry research and algorithm development workflows.

Who Uses It

Who Converts GLB to OFF

Who Converts GLB to OFF
01

Computational Geometry Researchers

Convert web and game assets from GLB to OFF to use them as input meshes for CGAL and OpenMesh algorithms — remeshing, simplification, Delaunay triangulation, and surface analysis.

02

Students and Educators

Convert GLB course assets to OFF for geometry processing assignments and experiments in tools like MeshLab and CGAL where OFF is the standard input format.

03

Software Engineers

Extract mesh geometry from GLB assets into OFF for processing with custom parsers or computational geometry libraries without depending on a full glTF loading stack.

04

Data Scientists

Convert 3D model datasets stored in GLB format to OFF for spatial analysis, mesh statistics, and geometry processing in research pipelines built around OFF-reading tools.

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Academic Researchers

Prepare geometry from web or AR sources as OFF files for inclusion in academic datasets, paper figures, and reproducible computational geometry experiments.

Related Tools

Frequently Asked Questions

What is the OFF file format?

OFF (Object File Format) is a simple ASCII format for representing polygonal meshes. It lists vertex coordinates followed by face definitions, with optional per-vertex color columns. It is widely used in computational geometry research and tools like MeshLab, CGAL, and OpenMesh.

Does the OFF output include vertex colors from the GLB?

If the GLB mesh contains vertex color attributes, the converter writes them as per-vertex RGBA color columns in the OFF output, preserving the color data for color-aware tools like MeshLab.

Is the OFF output ASCII or binary?

The converter produces ASCII OFF output, which is the standard variant used by MeshLab, CGAL, and OpenMesh. ASCII OFF is human-readable and directly parseable without a binary decoder.

Are textures or materials from the GLB included in the OFF file?

No. OFF stores only geometry — vertex positions, face indices, and optional vertex colors. Texture maps, PBR materials, and UV coordinates from the GLB are not representable in the OFF format. If you need materials, convert to OBJ or GLTF instead.

What is the maximum GLB file size?

The converter supports GLB files up to 100 MB. Dense meshes with millions of vertices produce large OFF files since ASCII encoding is less compact than binary formats.

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Convert Your GLB File to OFF Now

Upload your GLB and get a clean ASCII OFF file in seconds. No install, no manual steps.