System requirements

Updated 6 Aug 2026 · Applies to macOS (Apple silicon) & Windows

Omitly is a desktop app. It runs on your own machine and needs very little.

What you need

macOS: an Apple silicon Mac (M1 or later) running macOS 11 Big Sur or newer. Intel Macs are not supported — the macOS build is Apple silicon only. One caveat while we correct it: opening password-protected PDFs currently needs macOS 26 or newer. Everything else — opening, redacting, saving and verifying ordinary PDFs — works from macOS 11 up.
Windows: a currently supported 64-bit version of Windows.
Enough free disk space for the app and the documents you’re working on.

No account. There’s nothing to sign up for or sign in to.
No internet connection to redact. Opening, redacting, saving and verifying all work offline. See Where does your PDF go?
No server or admin infrastructure for a single install.

The app can reach the network for its own updates and for in-app support, but your documents are never part of that traffic.

Tell us what's not working — include your Omitly version (Help → About) and your operating system, and we'll reply within one business day.