Converseen is a batch image-processing application, which utilizes Qt5 for cross-platform support. It supports common image formats including DPX, EXR, GIF, JPEG, JPEG-2000, PhotoCD, PNG, Postscript, SVG, TIFF and many others. It can process single or an selectable amount of files. Converseen allows resizing, size compression, rotation and flipping, file renaming. It can also split up PDF files into multiple images.
APNG Assembler combines multiple PNG or TGA files into a squentially animated image in APNG format. It comes as command-line tool, or with a GUI for Windows, supports multiple color and palette optimizations, and can switch between zlib, 7zip and Zopfli compression.