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Preview vs UPDF: catalog facts
Preview	UPDF
Free Included with macOS at no extra cost.	Freemium Free to try, with paid plans for the full feature set.
macOS	Windows, macOS, Android, iOS, Web
Already installed on every Mac Handles both PDFs and images	Apps for desktop and mobile platforms Editing, OCR, conversion and redaction in one app
macOS only No advanced editing of PDF text or OCR tools like dedicated editors	Proprietary, with full features behind a paid plan The AI features rely on an online service
Downloadable app	Downloadable app, Web application
Closed source	Closed source
License: Proprietary	License not stated
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 September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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