Local Nested Notes utility – keep notes local, and nest them! Simple, portable, private notes app. Cross-platform, dependency free. Works in any browser.

Instructions:

Try LNN Now!

After clicking the link above, click ‘LNN.html,’ then choose ‘Download Raw File’ on the top right of the page.

Core Functionality

• Nested tree structure in the left sidebar with intuitive navigation
• Drag & drop reordering of notes
• Multi-note editing via Ctrl+click (notes appear tiled on the right)
• Context menus (right-click) for rename, duplicate, add child, delete
• All items are editable notes – no folder-only containers

Technical Features

• Single portable HTML file – no external dependencies
• Cross-platform compatibility – works on all modern browsers/devices
• Monospace font (Courier New/Monaco/Menlo) for consistent character width
• Line numbering with proper scroll synchronization
• Word wrap handled elegantly
• Print function with proper margins and print-optimized styling

Data Management

• JSON export/import for backup and transfer
• No automatic saving – data clears on refresh with warning
• Unsaved changes indicator (yellow dot in toolbar)
• Copy/paste works naturally with the textarea elements

UI/UX

• Dark/light theme toggle
• Minimalist black/white design with orange/yellow accents
• Responsive design that works on mobile devices
• Keyboard shortcuts (Ctrl+click for multi-select)
• Visual feedback for drag operations and selections

Getting Started

The app comes with two sample notes explaining how to use it. Simply:

1. Click notes to select them
2. Ctrl+click to select multiple notes for side-by-side editing
3. Right-click for context menu options
4. Drag notes to reorder them
5. Use Export to save your work as JSON
6. Use Import to restore from a saved file