> Drawing tools

1 BIT PIXEL

The core tools for placing pixels. Tap a tool in the toolbar, then draw on the canvas. Pinch to zoom, two fingers to pan.

Pencil

The pencil places solid pixels in the current color. Set the brush size and opacity in Tool Settings.

[ GIF: drawing with the pencil ]

Details & edge cases

Brush size: 1 = a single pixel, 2 = a 2×2 block, 3 = a plus, 4+ = a round disc.
Pixel-perfect only affects the 1px pencil — it removes the L-shaped double pixels a freehand line leaves, for clean lineart.
With opacity below 100%, paint blends onto existing pixels on the same layer (an opaque pixel stays opaque), and a single stroke won't darken where it overlaps itself.
Shading needs a palette of 2+ colors; it only shifts pixels that are already there (never fills empty space), and repeated passes deepen the shade.

The eraser clears pixels back to transparent, using the same brush size and shape as the pencil.

[ GIF: erasing ]

Details & edge cases

It shares the pencil's brush size and shape.
On an alpha-locked layer the eraser does nothing — the layer's alpha is locked.
To clear a whole region at once, make a selection and delete instead.

Fill (bucket) floods a connected region of the same color with the current color.

[ GIF: flood fill ]

Details & edge cases

It fills the connected area of the exact same color — there's no tolerance, so anti-aliased edges from an imported photo won't fill cleanly.
Confine it to a selection to fill only inside that area.
It affects the active layer only, not the layers below.

The eyedropper picks the color under your finger or Pencil; a loupe shows the exact pixel and its hex code.

[ GIF: picking a color ]

Details & edge cases

The All layers toggle samples the flattened image; off, it samples just the active layer.
After sampling it can hop back to your previous drawing tool (Settings → Drawing).
Quick eyedrop long-presses to sample without switching tools — set its source (Pencil / Finger / Both); the pixel you press isn't drawn.