Convert GLB to X (DirectX) Online — Modern to Legacy Format
Convert GLB (binary glTF) files to X (DirectX) format for use in legacy DirectX game engines and visualization tools. GLB is the modern standard for web and mobile 3D, while X format served the same role for DirectX 7-9 era applications.
Last updated Mar 2026
Data Loss — Converting GLB to X (DirectX) will not preserve vertex colors.
Drag GLB file here, or click to upload
Supports .glb files up to 150MB
Usually under 3 seconds — depends on file size.
What You Should Know
What Changes During Conversion
Geometry and UV coordinates are preserved. PBR metallic-roughness materials are downgraded to basic diffuse/specular. Embedded textures are extracted as file references. Scene hierarchy (nodes) is converted to X Frame hierarchy. Skeletal animations are converted where possible. Morph targets, vertex colors, and extensions (KHR_materials_unlit, etc.) are discarded.
Data Loss Considerations
GLB is a significantly richer format than X. Expect loss of: PBR material fidelity, embedded textures (extracted to external files), morph targets/blend shapes, vertex colors, glTF extensions, and scene metadata. This is a deliberate downgrade for legacy compatibility.
GLB vs X (DirectX): Quick Comparison
| Feature | GLB | X (DirectX) |
|---|---|---|
| Materials | PBR metallic-roughness | Basic diffuse/specular |
| Textures | Embedded in binary | External file references |
| Animation | Skeletal + morph targets | Skeletal only |
| Vertex Colors | Supported | Not supported |
| Scene Hierarchy | Node tree | Frame hierarchy |
| Era | 2017–present | Late 1990s–2000s |
Use GLB for modern web, mobile, and AR/VR applications. Convert to X only for legacy DirectX engine compatibility.
When to Convert GLB to X (DirectX)
Porting Web3D Assets to Legacy Engines
Take models from Three.js, Babylon.js, or other web 3D frameworks (which use GLB) and port them to legacy DirectX applications. Useful for maintaining older software that cannot be updated to support modern formats.
Asset Conversion for Retro Game Projects
Use modern 3D asset stores and tools (which primarily output GLB/glTF) to create content for retro-style games built on DirectX 7-9 frameworks.
Legacy Visualization Tool Input
Feed modern 3D content into legacy engineering visualization tools and custom DirectX renderers from the 2000s that only accept .x files.