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PaperKnife+UPDF
Free

Free and open source under the GPL-3.0 licence.

 Freemium

Free to try, with paid plans for the full feature set.

Android Windows, macOS, Android, iOS, Web
  • Works fully offline with no trackers
  • Merge, split, rotate and rearrange pages
  • Apps for desktop and mobile platforms
  • Editing, OCR, conversion and redaction in one app
  • Android only
  • No text editing or annotation listed
  • Proprietary, with full features behind a paid plan
  • The AI features rely on an online service
Downloadable app Downloadable app, Web application
Open source Closed source
License: GPL-3.0 License not stated
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked October 2, 2026

Checked September 23, 2026

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