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Squoosh vs RIOT: catalog facts
Squoosh	RIOT
Free Free to use.	Free Free desktop image optimizer.
Web	Windows, macOS, Linux
Side-by-side comparison makes it easy to judge quality versus file size trade-offs Runs entirely in the browser with no upload needed	Batch processing uses multiple CPU cores Preview original and optimized images side by side
Focused narrowly on compression and format conversion, not general image editing Best suited to single images rather than batch processing	The current macOS download is for Apple Silicon.
Web application	Downloadable app
Closed source	Closed source
License not stated	License not stated
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 September 22, 2026	Official website Full listing and sources Checked October 8, 2026

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