Strike

"Strike is a web-based, 1-bit paint tool, ideal for quick sketching or line-drawing, with brush/eraser/fill tools, a 16-color palette using dither patterns, and basic image transform tools. It offers undo/redo functionality, import and zoom options for PNG and JPG files, and save capabilities as 16-color greyscale or 1-bit black and white images. A standalone version is available to ensure compatibility across all browsers and devices."