.stl
STL modelStereolithography
A mesh format created by 3D Systems in 1987 for stereolithography printers. It describes a surface only as triangles, with no colour, units or materials, in text or binary form.
Sending models to 3D printers and slicers.
Opens in Cura, PrusaSlicer, Bambu Studio, Blender, Quick Look on Mac
About STL files.png
PNG imagePortable Network Graphics
A lossless image format created in the mid-1990s as a patent-free replacement for GIF. It keeps every pixel exactly and supports full alpha transparency.
Screenshots, logos, icons and graphics with sharp edges or see-through areas.
Opens in every browser, Photos, Preview, Paint and nearly all image editors
About PNG files