U3D to GLTF - Trusted, Fast, and Accurate U3D Converter

Convert U3D to GLTF

U3D to GLTF Conversion

This guide will show you how to effortlessly convert U3D to GLTF in just 3 simple steps:

  1. Download & Install:

    Convert your U3D files to GLTF format seamlessly using Autoconverter - simply install and launch the software on your system.

  2. Import U3D File:

    Either click Open... to browse for your .u3d file, or drag and drop it anywhere in the application window.

  3. Export to GLTF Format:

    Use Save As... to specify both location and filename (with .gltf extension) for your exported file.

Need a solution for U3D to GLTF conversion? Our carefully curated guides make U3D files conversion straightforward:

U3D Universal 3D File

An open standard for 3D data exchange, originally developed by the 3D Industry Forum to enable universal 3D visualization across platforms. As a compressed, binary file format, U3D efficiently stores three-dimensional triangular meshes along with additional properties such as color, transparency, or texture coordinates.

Key Features of U3D

  • Open Standard:

    Royalty-free format maintained by ECMA International (Standard ECMA-363).

  • PDF Integration:

    U3D enables the generation of PDF documents that contain interactive 3D data (ISO 32000). This means that you can view, rotate, zoom, and manipulate 3D models within a PDF document.

  • Compact Size:

    Optimized compression for web and document embedding.

  • Cross-Platform:

    Viewable across major operating systems without proprietary software.

U3D File Conversion

Our Autoconverter and Automesher Application utilize Intel's powerful open-source IFX conversion library to deliver robust U3D file conversion capabilities. This technology enables seamless two-way conversion between the U3D format and various industry-standard 3D formats including STL, OBJ, SKP, DAE, STEP, IGES, DWG, 3DS, FBX and X3D. The solution provides reliable transformation of 3D data while maintaining optimal file structure and visual fidelity throughout the conversion process.

GLB Graphics Language Transmission File

A file format developed and maintained by the Khronos Group organization, a consortium of industry leaders that creates open standards for graphics, media, and parallel computing. It is designed to facilitate the efficient storage and exchange of 3D models.

Key Features of GLTF/GLB

  • GLTF Versions:

    There are two versions of the GLTF file format that are available:
    • GLTF 1.0:
      Supports basic geometry, simple materials with textures, basic skeletal animations with joint hierarchies, scenes with a single root node and a hierarchy of child nodes, etc.
    • GLTF 2.0:
      Supports more features, such as PBR (Physically Based Rendering) materials, Draco compression, advanced skeletal animations, skinning, morph targets, etc.

  • ASCII and Binary Modes:

    By default, a GLTF file is saved in ASCII text mode, which is human-readable and easy to edit. To save a GLTF file with all referenced texture images in binary mode, the GLB file extension should be used. This reduces the file size and the number of files.

  • Embedded Textures:

    GLTF/GLB files allow for a more streamlined and efficient way to manage 3D assets. By storing textures directly within the file, these formats eliminate the need for separate image files, making the 3D model self-contained and easier to distribute.

GLTF/GLB File Conversion

Autoconverter and Automesher Application allow you to import and export GLTF and GLB files, and convert them into various other 3D file formats. Our products also support the use of Draco compression, which can significantly reduce the size of GLTF and GLB files without compromising visual fidelity.

U3D vs. GLTF Comparison

Property U3D GLTF
Extensions .u3d, .idtf .gltf, .glb
Name Universal 3D GL Transmission File
Versions
  • Min: GLTF V1
  • Max: GLTF V2
Textures
Colors
Geometry components
Readers
Writers