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jpegoptim vs FileOptimizer: catalog facts
jpegoptim	FileOptimizer
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under the AGPL-3.0 licence.
Windows, Linux, Command line	Windows
Small, fast tool focused on one job Easy to use in scripts and batch jobs	Lossless size reduction with no quality loss Supports a very wide range of file formats
Handles JPEG files only No graphical interface	Windows only Size savings depend heavily on the file type and how it was created
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: AGPL-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 2, 2026

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