Compare software

Image Optimizer vs TinyPNG: catalog facts
Image Optimizer	TinyPNG
Free Free and open source under the MIT licence.	Freemium The online compressor is free; the developer API and image CDN have paid plans.
Linux	Web
Lossless compression with identical pixels Processes a whole folder at once	Nothing to install, works in the browser Handles AVIF, JXL, WebP, PNG and JPEG
Only PNG and JPEG Overwrites the original files in place	Lossy compression changes image data Requires an internet connection and uploading images
Downloadable app	Web application
Open source	Closed source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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