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Local converter

GLB to USDZ Converter

Convert GLB files to USDZ locally in your browser for faster handoff across 3D tools.

Processed locally
No signup required
Files stay on your device
Browser-local GLB to USDZ 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

    USDZ

    Download the USDZ result when conversion is complete.

Preserved

  • Geometry
  • Units and scale

Limited

  • Materials
  • Textures
  • Scene hierarchy

Lost

  • Vertex colors
  • Animation

Direct answer

What is preserved when converting GLB to USDZ?

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

Before you convert

GLB to USDZ 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 USDZ
DataResultWhat this implementation does
GeometryPreservedGeometry is retained by the current GLB loader and USDZ writer.
MaterialsLimitedMaterials are converted to the subset supported by Three.js USDZExporter.
TexturesLimitedExported texture images are capped at 2048 pixels.
Vertex colorsNot exportedUSDZ output from this tool does not store vertex colors.
AnimationNot exportedThe GLB format can contain this data, but the current single-file loader does not retain it for conversion.
Scene hierarchyLimitedVisible meshes are written as world-space transforms rather than the complete source scene graph.
Units and scalePreservedThe USD stage declares metersPerUnit = 1.

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.
  • Preview the USDZ in Apple Quick Look to confirm scale and material appearance.

Why choose this GLB to USDZ converter

Local GLB decoding

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

GLB to USDZ data report

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

USDZ 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 USDZ result.

How to convert GLB to USDZ 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 USDZ

    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 USDZ file

    Your USDZ 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 USDZ file format

Universal Scene Description (zipped)

USDZ packages Pixar’s Universal Scene Description into a single uncompressed ZIP archive. Apple adopted it as the native AR format for iOS: Safari, Messages, and Mail open USDZ files directly in AR Quick Look.

For e-commerce and product visualization, shipping a USDZ next to a GLB covers both Android (Scene Viewer) and iOS (Quick Look) AR experiences.

Format reference: Alliance for OpenUSD USDZ specification

Strengths

  • Native AR support on iPhone and iPad
  • Single-file scene with materials
  • Backed by Pixar’s USD ecosystem

Commonly used for

  • iOS AR Quick Look experiences
  • E-commerce product AR
  • USD pipeline 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 USDZ?

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

Is the GLB to USDZ 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.

Why can’t some USDZ files be opened in the browser?

USDZ archives can contain ASCII (.usda) or binary crate (.usdc) data. Browsers can parse the ASCII variant, but binary USDC (which many Apple tools export) has no JavaScript parser yet. If your file fails, convert from the original GLB instead.

Related converters

Convert GLB to more formats

Convert other files to USDZ

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