To invert a layer mask in Photopea, you can either invert the selection associated with the mask or directly invert the mask itself using adjustments.
Inverting a Layer Mask in Photopea
Here's how to invert a layer mask in Photopea:
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Make sure you have a layer mask applied to your layer.
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If your layer mask based on a selection, invert the selection You can do this by going to Select > Inverse.
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If you want to invert the mask directly (regardless of selection): Go to Image > Adjustments > Invert. This will reverse the black and white values of the mask, effectively inverting its effect. White areas will become black, and black areas will become white. Grayscale values will also be inverted accordingly.
After these steps, the visible and hidden areas of your layer, as determined by the mask, will be reversed.
