.PNG/.APNG - Portable network graphics
- Pixel formats: Grayscale 1, 2, 4, 8, 16 bits/pixel. Palette 1, 2, 4, 8 bits/pixel. RGB 8, 16 bits/pixel. Uninterlaced and Adam7 interlaced supported.
- Compression: Inflate / Deflate.
- Transparency: Transparent color. Alpha plane.
- Meta info: Name, Author, Comment, Copyright, Time, Source, Density, Creation date, Adobe XMP (Name, Author, Comment, Copyright, Keywords, Density, Creation date, GPS location).
- Extensions: APNG - Animated PNG extension is supported, though it will only be written if you select "Animated PNG" as data format.
- Notes: The 'Super optimized' option for writing makes a difference only for 24-bit images where it uses a much slower, but in the end more rewarding, algorithm for finding the best 'filtering' of each scan line in the image resulting in smaller files. Note that this filtering is a loss-less filter that is 'reversed' when loading an image.