NoteKeeper

Auto-save: Content saves after every keystroke
Cross-device Sync: Access notes across browser instances via Firefox Sync
Offline Support: Works offline with browser sync support
Theme Detection: Automatic dark/light theme based on system preferences
Responsive Design: Works across devices and screen sizes
Sidebar Companion: Quick access from the browser sidebar
Test Coverage: Comprehensive test suite included

A Firefox extension that transforms the new tab into a minimalist, auto-saving text editor. Includes a sidebar companion for quick access.

Features

NoteKeeper screenshot