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Kompact vs Image Compressor: catalog facts
Kompact	Image Compressor
Free Free and open source under the AGPL-3.0, with no account required.	Free Free and open source under the MIT license.
Android	Android
Fully offline, images never leave the phone Batch compression with target size and quality settings	Compresses JPEG and PNG files on the device Offers MozJPEG and Jpegli encoders
Android only Watermarking is limited to text	Android-only Supports JPEG and PNG compression
Downloadable app	Downloadable app
Open source	Open source
License: AGPL-3.0	License: MIT
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 8, 2026

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