Sidebar Notebook

A lightweight, local-first notebook that lives directly in the Firefox sidebar. Built for developers who want to jot down notes, code snippets, and ideas without leaving the browser.

• VS Code-style file tree with nested pages • Markdown editor with live preview and syntax-highlighted code blocks • Jupyter-style notebook cells mode (Shift+Enter to add cells) • Command palette (Ctrl+P to search pages, Ctrl+K for commands) • Vim keybindings (toggleable) • One-click copy on code blocks • Fuzzy search across all page titles and content • Scratchpad mode for quick temporary notes • Collapsible sidebar to maximize writing space • Dark theme by default, light mode follows system preference • Real-time autosave — never lose a keystroke • Export/import all pages as JSON • Completely offline — all data stored locally in IndexedDB • No accounts, no cloud, no tracking

KEYBOARD SHORTCUTS

Ctrl+P — Search/switch pages Ctrl+K — Command palette Ctrl+N — New page Ctrl+S — Force save Ctrl+B — Toggle file tree Ctrl+E — Cycle view mode (edit → split → preview → cells) Shift+Enter — New cell (in cells mode)

PRIVACY

All data stays on your machine. Zero network requests. Zero telemetry. Zero data collection.