: GIMP: How to apply a mask to multiple layers? I'm new to GIMP, so I'm having trouble accomplishing the following: I want to apply the same layer mask to all of my layers without having to

@Steve758

You'll want this method if you're going to change the foreground but not the background. Changes to the background still require re-copying the background the masked image at the top. If the opposite is true (you're going to be changing the background a lot, and the content not much), then you are better off simply merging the layer group into a single layer.

Make a clone of your background (or whatever you want to show behind the thing you're masking)1. Then add a layer mask to this new layer that is the opposite of what you want. That is, if you want something in the other layers to show(opaque), make that area of the mask black (for transparency of the background) and if you want them to be hidden(transparent), make that area of the mask white(opaque background above them)

If you have a pre-made mask, simply apply it as normal, then with the mask selected go to Colors > Invert.

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@Connie430

Unfortunately GIMP does not support adding a layer mask to a layer group. Layer Masks can only apply to a single layer.

The closest work around is to create the layer mask you want on a single layer, then copy it to the other layers.


Add the layer mask to the layer (Right click -> Add Layer Mask)
Configure the layer mask as desired, such as adding a gradient
Right click the layer with the mask and select "Mask to Selection"
On another layer, add a layer mask. For "Initialize Layer Mask to" click "Selection"
Repeat for other layers as needed.


If you need to change the layer mask later, you'll need to delete all except one, change it, and then re-copy it to the other layers.

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@RJPawlick971

I don't specifically know GIMP, but i'm pretty sure the method would be the same, so in Photoshop, I would either

Group the layers under a folder, then apply a mask to the folder (this is the better method as it keeps everything editable and separate)

or

Create an empty mask on each of the layers, then create the actual mask in one of them, then copy that mask to each of the subsequent layers.

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