3D Model Error Checker

Drop files here

or

A 3D model: STL, OBJ, 3MF, GLB/glTF or PLY.

Find holes, flipped faces and broken edges; repair them.

How to use
  1. 1Open a model: problems are listed and shown in red.
  2. 2Press “Repair automatically”.
  3. 3Download the fixed model.
FAQ
What is a “broken edge”?
An edge shared by more than two triangles. Slicers can't tell what is inside and outside there.
Repair didn't fix everything.
Complex damage needs a desktop tool (Meshmixer, Blender, the repair in your slicer). Simple holes and flipped faces are fixed here.