🎉Ultra is live · 50% off — limited time
LogoModelfy 3D
Local converter

OBJ to GLTF Converter

Convert OBJ files to GLTF locally in your browser for faster handoff across 3D tools.

Processed locally
No signup required
Files stay on your device
Browser-local OBJ to GLTF conversion illustration

Private browser conversion

Files are converted locally in your browser.

1Upload2Convert3Download

Browser-local workflow

How this tool works

  1. Step 1

    OBJ

    Choose a OBJ file from this device.

  2. Step 2

    Browser-local conversion

    The supported geometry is converted in this browser.

  3. Step 3

    GLTF

    Download the GLTF result when conversion is complete.

Preserved

  • Geometry

Limited

  • Scene hierarchy

Lost

  • Materials
  • Textures

Direct answer

What is preserved when converting OBJ to GLTF?

This converter processes the OBJ file locally in your browser and downloads the converted GLTF file. Geometry is retained by the current loader and writer. Scene hierarchy uses a supported subset. Materials and textures are not included in the downloaded file.

Before you convert

OBJ to GLTF compatibility

These results describe Modelfy's current browser loader and exporter, not every feature allowed by the file specifications.

Data preserved, limited, or lost when converting OBJ to GLTF
DataResultWhat this implementation does
GeometryPreservedGeometry is retained by the current OBJ loader and glTF writer.
MaterialsNot exportedThe uploader accepts one OBJ file, so a companion .mtl file is not read.
TexturesNot exportedThe uploader accepts one OBJ file, so images referenced by a companion .mtl file are not read.
Vertex colorsNot in sourceOBJ does not define vertex colors to carry into glTF.
AnimationNot in sourceOBJ does not define animation to carry into glTF.
Scene hierarchyLimitedScene hierarchy is carried through the supported subset of the OBJ loader and glTF writer.
Units and scaleNot in sourceOBJ does not define units and scale to carry into glTF.

Verify after export

  • Confirm scale and units when opening the glTF file in the destination application.
  • Compare material colors and textures with the browser preview before using the result in production.

Why choose this OBJ to GLTF converter

Local OBJ decoding

The selected OBJ model file is decoded and rewritten as GLTF on your device; the model file is not uploaded to Modelfy.

OBJ to GLTF data report

The compatibility table identifies geometry as preserved by this loader and writer.

GLTF output checks

Scene hierarchy is limited; review the implementation detail and verify the downloaded file in your destination tool.

Preview before export

Inspect the browser preview before converting, then use the post-export checklist to confirm the GLTF result.

How to convert OBJ to GLTF online

  1. 01

    Upload your OBJ file

    Drag and drop the file into the converter, or click Upload. OBJ inputs up to 10 MB are processed locally.

  2. 02

    Convert to GLTF

    Preview the model in 3D, then click Convert. The conversion runs locally in the browser; processing time depends on model complexity and device resources.

  3. 03

    Download the GLTF file

    Your GLTF file downloads straight to your device, ready for the next tool in your pipeline.

About the OBJ file format

Wavefront OBJ

The Wavefront OBJ format has been a de facto interchange standard since the 1990s. It stores vertex positions, normals, texture coordinates, and faces in plain text, with materials described in a companion .mtl file.

OBJ does not support animation or scene hierarchies, which keeps it simple and portable across many modeling, printing, and rendering tools.

Format reference: Library of Congress OBJ format description

Strengths

  • Broad support across established 3D tools
  • Simple structure that is easy to debug
  • Reliable geometry interchange

Commonly used for

  • Static model exchange between tools
  • 3D printing preparation
  • Photogrammetry and scan output

About the GLTF file format

GL Transmission Format

glTF 2.0 is a royalty-free specification from the Khronos Group for efficient transmission of 3D scenes. The .gltf variant stores the scene description as readable JSON, optionally referencing external binary buffers and textures.

It is the most widely supported runtime format on the web: three.js, Babylon.js, Unity, Unreal, and most DCC tools read and write glTF directly.

Format reference: Khronos glTF 2.0 specification

Strengths

  • Open standard with wide industry support
  • Human-readable JSON scene description
  • PBR materials, skins, and animations

Commonly used for

  • Web 3D and e-commerce viewers
  • Cross-tool scene exchange
  • Runtime asset delivery

Frequently asked questions

Is my OBJ model file uploaded to a server?

The selected OBJ model file is processed by the browser and is not uploaded to Modelfy. Website code and static assets still load over the network like a normal web page.

Will I lose quality converting OBJ to GLTF?

Mesh geometry is preserved as closely as the GLTF format allows. The target format may triangulate geometry or drop unsupported features such as animations, materials, textures, or scene hierarchy.

Is the OBJ to GLTF converter free to use?

Yes. The browser viewer, converter, and local 3D text tool require no account and add no watermark. Input limits vary by format, up to 50 MB; AI model generation is a separate credit-based product.

What is the maximum file size?

OBJ inputs up to 10 MB are accepted. The format-specific limit keeps browser-local parsing bounded; actual processing also depends on available memory, model complexity, and device performance.

Where are the materials and textures of my OBJ file?

OBJ stores materials in a separate .mtl file with texture images alongside it. This single-file browser tool does not request those companions, so it displays supported OBJ geometry with a neutral material; review the compatibility table before conversion.

Does the browser tool support .gltf files with external buffers?

Self-contained .gltf files (embedded buffers and textures) work best, because the browser only receives the single file you upload. If your .gltf references external .bin or texture files, export it as .glb first.

Related converters

Convert OBJ to more formats

Convert other files to GLTF

AI 3D generation

From a single image to a production-ready 3D model

These browser tools stay free for viewing and converting files you already have. When the model does not exist yet, Modelfy generates a textured mesh from one reference image — the first one is free.

Try the AI 3D generator