How to convert STL to GLB

Need to convert STL to GLB? STL stores raw triangle geometry only, with no colour, UVs or materials; GLB is best for web, real-time and AR delivery. This guide covers exactly what survives the conversion, what you can lose, and the quickest reliable workflow.

What transfers and what you lose

• STL carries no materials, so you will assign materials and textures in the GLB pipeline.
• Check units and scale after importing. STL and GLB workflows often assume different default units, which is the most common cause of a model arriving far too large or too small.

Convert STL to GLB in your browser

This local converter supports standalone STL files for this safe mesh route. Nothing is uploaded. Materials, animation and external texture sidecars may be lost depending on the formats.

Local mesh converter

Drop an STL file here, or click to choose one.

Convert to GLB

Choose a file to convert.

Recommended workflow

1. Open your STL file. Import the STL file into a tool that reads both formats, such as Blender (free), MeshLab or your slicer.
2. Check scale, units and orientation. Confirm the model is the right size and facing the right way before exporting. Fix the units now rather than in the target application.
3. Set up materials for the target. Assign or rebuild PBR materials (base colour, roughness, metallic, normal) so they survive as GLB.
4. Export as GLB. Export to GLB using the correct options for web, real-time and AR delivery, then re-open the result to confirm geometry, scale and materials are intact.

Frequently asked questions

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