Filters

Tapping the menu icon on the lower right of the layer menu (1) will bring you to “Filters” (2).

Filter List: A list showing hue, Gaussian blur, mosaic, monochrome, line extraction, and reverse colors will be displayed.
Hue Saturation Brightness: This will allow you to adjust the hue/saturation/brightness of the layer you have selected.

Fig. Hue/saturation/brightness
Gaussian Blur: This will blur the layer you have selected.

Fig. Gaussian blur
Mosaic: This will add a mosaic to the layer you have selected.

Fig. Mosaic
Monochrome: This will turn the layer you have selected monochrome.
Line art extraction: This will extract the line from the image of the layer you have selected.

Fig. Line art extraction
Conveat layer: This will convert the layer you have selected to a color layer, 8bit layer, or 1bit layer.