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Optimage vs 4K Image Compressor: catalog facts
Optimage	4K Image Compressor
Freemium Free for 24 images per day; a full licence costs $15.	Freemium Free download with a paid premium upgrade.
macOS	Windows, macOS
Automatic compression at consistent visual quality Supports many image formats plus MP4, WebM and PDF	Compress to a percentage or an exact target file size Batch processing of many images
macOS only Free tier limited to 24 images per day	Some features are reserved for the paid premium tier Closed source
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it 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.