OctoDeck

A tiny (~15 KB) presentation engine. Offline-ready. Slides stored in URLs. No files, no servers, no accounts. Just markdown in a hash.

How it works

Write slides in markdown. The entire deck gets compressed and encoded into the URL hash. Share the URL — share the presentation.

Features

• Markdown syntax for slides
• Live editing with instant preview
• Customizable styles
• Undo/redo via native browser history
• Offline-ready (works offline after the first load)
• No backend, no database, no tracking
• Printable to PDF
• Open source (MIT)

Usage

Create a new deck or view demo.

View mode controls

• Enter - start presentation
• Esc - exit presentation
• Arrow keys - navigate slides
• Space - next slide

Touch device

• Tap left side - previous slide
• Tap right side - next slide
• Tap top - exit presentation

Tech

Built with Preact and Bun. Source code on GitHub.

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