.amf
AMF modelAdditive Manufacturing File Format
An XML format for 3D printing, published by ASTM in 2011 and later adopted by ISO. It adds curved triangles, colours, materials and lattices to the plain mesh idea of STL.
Multi-material and colour 3D prints in slicers that support it.
Opens in PrusaSlicer, Slic3r
About AMF 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