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Netpbm vs Gifsicle: catalog facts
Netpbm	Gifsicle
Free Free and freely redistributable.	Free Free and open source.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Over 350 separate tools Converters for about 100 graphics formats	Creates, edits and splits animated GIFs from the terminal Optimizes GIF size by trimming colours and colour tables
No interactive or graphical tools Many small programs to learn instead of one command	GIF format only Command-line only, no preview window
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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