Advanced PNG optimization program
Easy-to-use command line tool for images
Batch Images Converter
Deconstruct APNG file into a sequence of PNG frames.
Convert APNG animations into animated GIF format.
Convert GIF animations into APNG format.
A modified pngnq: convert png images to 256 colours.
Change bmp files' aspect ratio by adding canvas borders.
Convert image color channels (bmp , jpg,gif) to CSV Excel