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Gifsicle vs Gifski: catalog facts
Gifsicle	Gifski
Free Free and open source.	Free Free and open source; a separate commercial license is available for closed-source use.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Creates, edits and splits animated GIFs from the terminal Optimizes GIF size by trimming colours and colour tables	Thousands of colors per frame with temporal dithering Resize and compression controls for size limits
GIF format only Command-line only, no preview window	Output is limited by the GIF format itself GUI apps for Windows and macOS are maintained separately
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: AGPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.