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Local converter

GLB to GLTF Converter

Convert GLB 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 GLB 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

    GLB

    Choose a GLB 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
  • Vertex colors
  • Scene hierarchy

Limited

  • Materials
  • Textures

Lost

  • Animation

Direct answer

What is preserved when converting GLB to GLTF?

This converter processes the GLB file locally in your browser and downloads the converted GLTF file. Geometry, vertex colors, and scene hierarchy are retained by the current loader and writer. Materials and textures use a supported subset. Animation is not included in the downloaded file.

Before you convert

GLB 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 GLB to GLTF
DataResultWhat this implementation does
GeometryPreservedGeometry is retained by the current GLB loader and glTF writer.
MaterialsLimitedMaterials are normalized to Three.js standard materials; advanced shader properties can change.
TexturesLimitedImages are embedded in the downloaded JSON glTF rather than emitted as companion files.
Vertex colorsPreservedVertex colors is retained by the current GLB loader and glTF writer.
AnimationNot exportedThe GLB format can contain this data, but the current single-file loader does not retain it for conversion.
Scene hierarchyPreservedScene hierarchy is retained by the current GLB loader and glTF writer.
Units and scalePreservedUnits and scale is retained by the current GLB loader and glTF writer.

Verify after export

  • Compare material colors and textures with the browser preview before using the result in production.
  • Confirm that a static model is acceptable; animation is not exported.

Why choose this GLB to GLTF converter

Local GLB decoding

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

GLB to GLTF data report

The compatibility table identifies geometry, vertex colors, scene hierarchy as preserved by this loader and writer.

GLTF output checks

Materials 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 GLB to GLTF online

  1. 01

    Upload your GLB file

    Drag and drop the file into the converter, or click Upload. GLB inputs up to 25 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 GLB file format

GL Transmission Format Binary

GLB is the binary container for glTF 2.0, the "JPEG of 3D" standard maintained by the Khronos Group. A single .glb file bundles meshes, PBR materials, textures, and animations, which makes it the easiest 3D format to move between tools and platforms.

Because GLB is optimized for fast loading on the web, it is the default output of most modern 3D pipelines, including AI 3D generators, web viewers, and game engines.

Format reference: Khronos glTF 2.0 specification

Strengths

  • Single self-contained file with textures included
  • Full PBR material and animation support
  • Loads fast in browsers and game engines

Commonly used for

  • Web and AR/VR experiences
  • Game engine asset delivery
  • AI-generated 3D model exchange

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 GLB model file uploaded to a server?

The selected GLB 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 GLB 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 GLB 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?

GLB inputs up to 25 MB are accepted. The format-specific limit keeps browser-local parsing bounded; actual processing also depends on available memory, model complexity, and device performance.

What is the difference between GLB and glTF?

They share the same data model. A .gltf file is JSON that can reference external texture and buffer files, while a .glb packs everything into one binary file. GLB is easier to share; glTF is easier to inspect and edit by hand.

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 GLB 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