TextNotes is a powerful note extension designed for Firefox users, offering a range of features to enhance note-taking and organization. It allows users to store notes directly in the browser's permanent storage, ensuring easy access and management. The interface includes a flat tree control for displaying note titles, making navigation intuitive. Users can add, delete, and rearrange notes with drag-and-drop functionality, while a context menu provides additional options for managing their notes effectively.

The extension also includes a trashbin for deleted notes, ensuring recovery of important information. Customization options are available, such as changing the TextArea size and selecting between dark, light, or auto display modes. TextNotes supports keyboard shortcuts for efficiency and allows users to create notes from webpages. Additionally, it facilitates synchronization among multiple local instances, making it a versatile tool for personal organization.