How do you apply a mask in Gimp?

Apply a Layer Mask

1. Right click on the top layer in the Layers palette and select Add Layer Mask.
2. Select White (full opacity). …
3. Select the Layer Mask by clicking and holding on the white rectangle icon and then press the D key to reset the foreground and background colors to black and white respectively.

12.04.2020

Does gimp have masks?

By the GIMP team’s definition, layer masks “allow you to selectively modify the opacity (transparency) of the layer [layer masks] belong to. This differs from the use of the layer Opacity slider as a mask has the ability to selectively modify the opacity of different areas across a single layer.”