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Can PrusaSlicer Open GLB Files? How to Import Them

PrusaSlicer is Prusa Research's free slicer for Prusa printers and many others.

Short answer · Convert first

Not directly. PrusaSlicer doesn't import GLB, so convert the file to STL first and import the STL.

Open the GLB to STL converter

Getting a GLB file into PrusaSlicer

  1. 1Check the fileA GLB is self-contained: geometry, materials and textures are inside the one file, so there is nothing else to copy.
  2. 2Convert GLB to STLDrop the file into our GLB to STL converter. It runs in your browser, so the model never leaves your computer.
  3. 3Import into PrusaSlicerFile › Import › Import STL/3MF/STEP/OBJ/AMF… (Ctrl+I).
  4. 4Check scale and orientationPrusaSlicer works in millimetres and is Z-up. GLB files are metres by convention, so they normally arrive at the right size.
  5. 5Place it and sliceLay the flattest face on the plate, confirm the dimensions in the object panel, and slice. Slicers ignore textures and animation.

What comes through

ShapeYes, always.
Colours and materialsIgnored: PrusaSlicer only uses the shape.
TexturesNot used by a slicer.
AnimationPrusaSlicer doesn't play animation.

Things to watch for

  • PrusaSlicer doesn't read GLB; convert it to STL.
  • Press F to lay a model flat on a selected face, and use the Cut tool (C) to split tall models.

Questions

Does PrusaSlicer support GLB files?
Not directly. PrusaSlicer doesn't import GLB, so convert the file to STL first and import the STL.
Why is my GLB model the wrong size in PrusaSlicer?
GLB files are metres by convention, while PrusaSlicer works in millimetres. PrusaSlicer asks to scale tiny models up from inches; check the size panel either way.
What is the best 3D format for PrusaSlicer?
3MF and STL are the most reliable choice for PrusaSlicer. If you have a choice when exporting, pick 3MF over GLB.

Menu names follow Prusa Research's current release. Check the official PrusaSlicer documentation if your version differs.

Written with AI assistance by the Renderlyst team in October 2026. Format support reflects each app's current release as we understand it, and we link the official documentation so you can confirm it for your version. Spotted something out of date? Email alishbakhalid766@gmail.com.