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DeftPDF vs PaperKnife+: catalog facts
DeftPDF	PaperKnife+
Freemium Free to use with limits; Premium membership raises file size and batch limits and adds AI…	Free Free and open source under the GPL-3.0 licence.
Android, iOS, Web	Android
More than 40 PDF tools in one place Document translation and OCR included	Works fully offline with no trackers Merge, split, rotate and rearrange pages
Files are uploaded to DeftPDF's servers for processing Free tier limits file size and batch size	Android only No text editing or annotation listed
Downloadable app, Web application	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
No account needed	No account needed
Needs internet	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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