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Gifsicle vs Netpbm: catalog facts
Gifsicle	Netpbm
Free Free and open source.	Free Free and freely redistributable.
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	Over 350 separate tools Converters for about 100 graphics formats
GIF format only Command-line only, no preview window	No interactive or graphical tools Many small programs to learn instead of one command
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0-or-later
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.