apngdis: APNG Disassembler
gif2apng: GIF -> APNG converter
apng2gif: APNG -> GIF converter
apngopt: APNG Optimizer
APNG Assembler creates APNG animation from PNG/TGA image sequence.
A number of optimization techniques used to make APNG files as small as possible: inter-frame optimization utilizing alpha-blend and dispose operations, smaller than the full-size subframes, dirty transparency, color type and palette optimizations, and various compression options: zlib, 7zip, Zopfli.
Command-line version is available for all major OSes, as well as GUI version for Windows. C++ source code is available under zlib license
Command line: apngasm output.png frame001.png [options]
Command line: apngasm output.png frame*.png [options]
1 10: frame delay is 1/10 sec. (default)
-l2: 2 loops (default is 0, forever)
-f: skip the first frame
-kp: keep the original palette, do not optimize it.
-kc: keep the original PNG color type, do not optimize it.
-z0: zlib compression
-z1: 7zip compression (default)
-z2: Zopfli compression
-i##: number of iterations (default -i15) for 7zip and Zopfli
Inter-frame optimization: http://littlesvr.ca/apng/inter-frame.html
GIF vs. APNG vs. WebP: http://littlesvr.ca/apng/gif_apng_webp.html
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