How to open
Open the pixel art maker, or press Edit from the pixel gallery / converter. Community Open loads the matching designer. See photo vs blank and gallery Edit.
Canvas size
Set width and height under Canvas size before detailing. Large mid-project resizes may crop or pad — follow on-screen prompts. Small canvases suit icons; larger grids cost more editing/export size. Export a PNG/CSV backup before risky resizes.
Drawing tools
Toolbar: Paint, Fill, Erase, Pick, Replace all, plus Brush size and Mirror drawing. Sidebar My colors: My colors. Also: shortcuts, Replace all, brush & mirror, zoom & pan, undo.
Display and export
Display → Show codes / Grid, then Print/PDF, PNG, CSV, Share (PNG and CSV, Print and PDF). Failure modes: resizing without backup; using Fill where Replace all was needed; printing without Show codes. Photos: converter.