Adding and Editing Layer Masks in GIMP: GUI Steps and a Python-Fu Script
How GIMP layer masks work, how to add and paint one in the GUI, and how to automate the same steps with a Python-Fu script — plus the pitfalls that trip people up.
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Choosing Between GIMP Layer Masks and Layer Groups for Non‑Destructive Editing
Decide when to use a layer mask for per‑layer feathering versus a layer group for collective transforms, with a quick comparison table and step‑by‑step validation.
gimpNon-Destructive Editing in GIMP Using Layer Masks and GEGL Adjustment Layers
Learn how GIMP's layer masks and GEGL adjustment layers let you edit images without permanently changing pixels, keeping your workflow fully reversible.
Merged visible layers ignore layer mask visibility
When using the Merge Visible Layers command on an image that contains layers with associated layer masks, the expected result is a single layer that visually matches the on‑screen preview, which includes the mask’s effect. It is unclear whether GIMP evaluates the mask visibility before merging or simply copies the raw pixel data, which could produce a merged