Compare software

FFmpeg vs Gifski: catalog facts
FFmpeg	Gifski
Free Free and open source. The codebase is mainly LGPL 2.1 with some components under the GPL…	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
Handles practically every container and codec there is Remuxes without re-encoding, so a container change is instant and lossless	Thousands of colors per frame with temporal dithering Resize and compression controls for size limits
Command line only, with syntax that punishes guessing Argument order matters in ways that are not obvious	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: LGPL-2.1	License: AGPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 1, 2026

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