OptionalblendBlend mode of the layer. Not present when layer is actually a layer group.
OptionalcelsOptional array of Z index overrides. Only present when z indices are set on one or more frames.
OptionalcolorOptional color with which the layer is displayed in Aseprite. Only present when color is not fully transparent.
OptionaldataOptional custom data. Only present when string is not empty.
OptionalgroupOptional parent group. Not present when on root level.
The layer name.
OptionalopacityOpacity (0-255) of the layer. Not present when layer is actually a layer group.
A sprite layer or layer group. Layer information only makes sense when sprite sheet image is splitted by layer because otherwise the layers are already flattened.