3D Model Viewer & Converter

Open a 3D model, check whether it is ready to print, fix its orientation and units, then save it in another format.

Your file is NOT uploaded. Everything runs in your own browser, so it stays private and fast.

Drop a file here or click to choose STL · OBJ · 3MF · PLY · GLB

Open file… 256 × 256 mm bed Mark open edges

Model info

File units

Rotate 90°

Mirror

Scale

Units mm, Z up, model centred on the bed. Binary STL; binary PLY; the 3MF opens in Bambu Studio, OrcaSlicer, PrusaSlicer and Cura.

STL — binary and ASCII, the most common 3D printing format.
3MF — slicer projects (Bambu Studio, OrcaSlicer, PrusaSlicer): every object on the plate, with its position and rotation.
OBJ — from Blender, ZBrush and other 3D apps; polygons are split into triangles.
PLY — ASCII or binary, often from 3D scans.
GLB / glTF — without Draco compression; metres are turned into mm.

Volume is computed from the model surface (the model must be closed for it to be exact).
Solid weight = volume × density (PETG 1.27 g/cm³, PLA 1.24 g/cm³). A normal print is much lighter because its inside is mostly hollow (infill).
Open edges = holes in the surface. Models with holes often fail to slice or print oddly; those edges are marked in red.

Upload the same file to Print Your File: instant price, printed in PETG and shipped to your door.