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OffPDF vs AvePDF: catalog facts
OffPDF	AvePDF
Free Free and open source under the MIT license, with no paid tier.	Freemium A small number of free actions, with AvePDF Premium for unlimited use.
Windows, macOS, Web	Web
Includes desktop and browser tools Processes files locally	Converts over 100 formats to PDF PDF/A conversion and validation
The macOS app supports Apple silicon. OCR, Office conversion, encryption, and repair require the desktop app.	Free use limited to a few actions Files are processed online
Downloadable app, Web application	Web application
Open source	Closed source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Works offline	Needs internet
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 2, 2026

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