STL inspector and converter

BetaBeta version. Check the file in your slicer before printing. Found a problem? Contact us.

Open an STL or 3MF and see its dimensions, volume and mesh edge checks. Convert from inches to millimeters, resize and save as STL, all in your browser.

How it works — watch the video

1Choose or drag in the .stl or .3mf file.
2Check dimensions, volume and mesh edges.
3If needed, resize it and download as STL.

Choose or drop a .stl or .3mfThe file is read right here in your browser and never leaves your device.

Resize (optional)

3MF → STL: only the geometry goes into the STL — colors, print settings and plates from the 3MF are left out. The parts go together in one file, in the 3MF's positions and scale, but stay separate parts (they aren't merged into one).