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Image Optimizer vs YOGA Image Optimizer: catalog facts
Image Optimizer	YOGA Image Optimizer
Free Free and open source under the MIT licence.	Free Free and open source under the GPL-3.0 licence.
Linux	Windows, Linux
Lossless compression with identical pixels Processes a whole folder at once	Simple drag and drop workflow Converts between JPEG, PNG and WebP
Only PNG and JPEG Overwrites the original files in place	JPEG optimization is slow and memory hungry Small gains when optimizing WebP files
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0-or-later
No account needed	No account needed
Not stated if it works offline	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.