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PDF Toolkit vs PaperKnife+: catalog facts
PDF Toolkit	PaperKnife+
Free Free and open source under the Apache-2.0 licence.	Free Free and open source under the GPL-3.0 licence.
Android	Android
Works fully offline on the device Merge, split, compress and page editing in one app	Works fully offline with no trackers Merge, split, rotate and rearrange pages
Android only No tagged releases on GitHub	Android only No text editing or annotation listed
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: GPL-3.0
No account needed	No account needed
Works offline	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.