OpenDeck

Help & support

OpenDeck — for iPhone, iPad, Mac, and any browser

OpenDeck is a player for decks — self-contained HTML presentation documents (.deck files). It needs no account and no internet connection. This page covers the common questions; if you're stuck, get in touch.

Getting started

  • First run. A short welcome deck is already in your library so you can see how it works right away.
  • Open a deck. Tap a .deck file in Files, Mail, or AirDrop, or use the system Share sheet and choose OpenDeck. It’s added to your library.
  • Present it. Tap the right half of the screen to advance, the left half to go back; arrow keys work too. Use Fullscreen for a clean view.

Frequently asked questions

How do I add my own decks?

Import any .deck file via Files, AirDrop, or the share sheet. To create decks, use the free OpenDeck skill with your AI coding agent — see open-deck.org for the one-step install and a prompt to try.

What is a .deck file?

A single, self-contained presentation: slides, animation, and (optionally) baked-in voice narration in one file. It opens offline and doesn’t depend on any server.

Which devices does OpenDeck run on?

The app runs on iPhone, iPad, and Mac. And because a deck is just a self-contained HTML page, an exported deck opens in any modern web browser on any device — whether you host it on your own website, email it, or open it from disk. The same deck looks and behaves the same everywhere.

Do I need an account or an internet connection?

No. There’s no sign-in, and decks play fully offline once they’re in your library.

Is my data private?

Yes. OpenDeck collects nothing and makes no network requests — everything stays on your device. See the Privacy Policy for details.

A deck won’t open — what should I check?

Make sure the file ends in .deck and finished downloading completely, then try importing it again from Files or the share sheet. If a specific deck still fails, send it to us and we’ll take a look.

Contact & bug reports

Email us at info@open-deck.org — questions, feedback, and problem decks all welcome.

Found a bug or have a feature request? Open an issue on GitHub.