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4K Image Compressor vs YOGA Image Optimizer: catalog facts
4K Image Compressor	YOGA Image Optimizer
Freemium Free download with a paid premium upgrade.	Free Free and open source under the GPL-3.0 licence.
Windows, macOS	Windows, Linux
Compress to a percentage or an exact target file size Batch processing of many images	Simple drag and drop workflow Converts between JPEG, PNG and WebP
Some features are reserved for the paid premium tier Closed source	JPEG optimization is slow and memory hungry Small gains when optimizing WebP files
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0-or-later
Not stated if an account is needed	No account needed
Not stated if it 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.