How do you make 3D models for Bloxd.io?

The recommended way to make 3D models for Bloxd.io is by using a free tool like Blockbench. You can create a 'Generic Model,' build your shape using cubes, paint it directly in the application, and then export it as a Binary glTF (.glb) file.

What is the file format for Bloxd.io 3D models?

The required file format for custom 3D models in Bloxd.io is GLB (.glb), which is the binary version of the glTF 2.0 format.

3D Modeling (GLB) for Bloxd.io

How to create 3D models for Bloxd using Blockbench.

1. Import Specifications (2025)

To import custom items into Bloxd.io (via the .glb format), your model must meet strict performance criteria.

Attribute	Limit/Recommendation
Polygon Count	Max ~12,000 Tris
File Size	Keep under 2MB (Hard limit ~4GB but unusable)
Format	.glb (Binary glTF)
Animations	Baked animations supported

2. Texture Maps

Bloxd supports PBR (Physically Based Rendering) texture maps embedded in the GLB. To make your item look realistic, utilize:

Diffuse/Albedo: The base color texture.
Normal Map: Adds fake depth and bumps without adding polygons.
Emissive Map: Makes parts of the model glow in the dark (great for lightsabers or magic staffs).
Specular/Roughness: Controls how shiny the object is.

3. Common Issues

Invisible Model: Usually caused by inverted normals. In Blender, select all faces and press Shift + N to recalculate normals outside.
Import Failed: File size too big. Use a "Decimate" modifier in Blender to lower the poly count.
Textures Missing: Ensure you selected "Export Textures" or "Embed Media" when exporting the GLB file.

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