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OptiImage vs Image Optimizer: catalog facts
OptiImage	Image Optimizer
Free Free and open source under the LGPL-2.1-only licence.	Free Free and open source under the MIT licence.
Linux	Linux
Lossless and lossy compression modes Option to keep or remove metadata	Lossless compression with identical pixels Processes a whole folder at once
Linux only Young project, first released in late 2024	Only PNG and JPEG Overwrites the original files in place
Downloadable app	Downloadable app
Open source	Open source
License: LGPL-2.1-only	License: MIT
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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