Started Pixel Art as a new feature for Doodle, built with HTML, CSS, and vanilla JavaScript. Added a pixel canvas, adjustable resolutions, color palette, pencil, eraser, fill, and eyedropper tools, grid toggle, transparent backgrounds, and PNG export. Improved fast-stroke drawing with pixel interpolation, fixed immediate Fill rendering, handled transparent pixels in the eyedropper, prevented unnecessary undo history entries, and added Redo alongside Undo.