model/stl

The lowest common denominator of 3D printing: bare triangles with no units, no color, no curves — which is exactly why every slicer and CAD tool reads it. One type covers two formats: binary STL, with an 80-byte free-form header followed by triangle records, and ASCII STL, which begins with the word solid. Telling them apart is the trap — binary headers often start with solid too, so sniffing on that word misfires; robust parsers check whether the declared triangle count matches the file length instead.

Defined by IANA registration: model/stl · IANA registration. Registry facts from the IANA media-types registry via mime-db.