Working features:
- Animation timeline with frame-by-frame control, adjustable FPS, and frame timing
- Layer system with add, remove, duplicate, reorder, visibility toggle, and merge up/down
- Drawing tools including pencil, eraser, line, rectangle, ellipse, paint bucket, and pipette
- Collaborative editing with real-time cursor sharing, chat, and session management
- Color picker with RGB/HSV sliders, palette management, recent colors, and drag-to-pick
- Grid overlay system with customizable size, color, and opacity
- Canvas resize and transform tools (flip, rotate, scale)
- Spritesheet loader with grid slicing and frame selection
- Reference image system with trace (single) and floating (multiple draggable) modes
- Import/export support for PXL (native), PNG, PSD, and PAL palette files
- Undo/Redo history with batch operations for complex actions
- Touch gestures: pinch to zoom, two-finger pan, three-finger brush resize
- File browser for local file access (works in browser and Cordova)
- Settings panel with language, theme, performance, and collaboration preferences
- Timelapse export from drawing history
- Floating palette colors with drag-to-delete zone
- Keyboard shortcuts for tools and actions
- Mobile-friendly responsive UI with swipe gestures
- Debug canvas for development