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Kompact vs Image Toolbox: catalog facts
Kompact	Image Toolbox
Free Free and open source under the AGPL-3.0, with no account required.	Free Free and open source under the Apache-2.0 licence.
Android	Android
Fully offline, images never leave the phone Batch compression with target size and quality settings	More than 310 filters with shareable custom filter chains Batch processing and format conversion
Android only Watermarking is limited to text	Android only The large feature set can take time to learn
Downloadable app	Downloadable app
Open source	Open source
License: AGPL-3.0	License: Apache-2.0
No account needed	Not stated if an account is needed
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.