How to Add Textures to a GLB Model

A GLB can package geometry, materials, textures, a skeleton, and animations in one binary file. That makes it convenient for web previews and game-asset handoffs, but it also means a successful retexture must respect more than the visible color on the surface.

This workflow shows how to add a new PBR texture to an existing GLB without rebuilding the entire asset.

Check whether the GLB is ready

Open the model in a viewer or Blender and confirm:

1. The model loads without missing geometry.
2. The mesh has UV coordinates.
3. The UV islands are not accidentally stacked or stretched.
4. The intended material regions are understandable.
5. Rigged characters contain the expected skeleton and animation clips.

A texture generator can create new pixels and material maps, but it still needs a reliable map between the 2D texture and the 3D surface.

What "texturing a GLB" changes

The mesh defines the shape. The texture maps define how its surface looks under lighting.

A typical PBR result uses:

• Base Color for visible color without lighting
• Normal for small surface-direction changes
• Roughness for glossy versus matte response
• Metallic for metal versus non-metal behavior

These maps are connected to the material and packaged with the geometry in the downloaded GLB.

Add a texture with a text prompt

Go to the GLB texture generator, upload the model, and describe the material direction.

For a lantern, a useful prompt might be:

This is more actionable than "make it medieval" because it identifies the materials and the way each surface should age.

Add a texture from a reference image

Use a reference image when you need to communicate a palette, brush treatment, or art style. The source image does not have to match the model's silhouette, but it should make the intended materials easy to read.

For more control, combine the image with a short prompt that names the parts that should be metal, painted, leather, stone, fabric, or another material.

Inspect the generated GLB

Rotate the result under the preview lighting and look for:

• Consistent texel density across large and small parts
• Clean transitions between material regions
• Details that follow the model instead of fighting its geometry
• Sensible roughness and metallic response
• No obvious UV seams on important visible surfaces

Use the clay view to compare the same geometry without the generated material. This helps separate a modeling problem from a texturing problem.

Download and continue the workflow

Download the textured GLB for the complete result. Download the individual PBR maps when you want to adjust the material in another application.

In Blender, reconnect the maps to a Principled BSDF material if you need manual control. In a game engine, verify the expected color space for each map:

• Base Color normally uses sRGB.
• Normal, Roughness, and Metallic normally use non-color data.

The exact import options depend on the engine, but preserving those roles keeps the PBR response predictable.

What happens to animations?

Textures do not define movement. A character's running, jumping, and attack clips belong to the original rig and animation tracks.

For a compatible rigged GLB, the texturing workflow can keep the skeleton, skin weights, morph targets, and animation clips while replacing the surface appearance. The preservation check should fail safely if the generated mesh no longer matches the required source topology.

Try it with your model

Use the 3D Texture Generator to upload a GLB, inspect its source data, generate a new look, and download both the complete model and its individual maps.