How to Invert a Selection in GIMP

Inverting a selection flips which pixels are selected. If you had the subject selected, after inverting you have the background selected. If you had a circle in the center, after inverting you have everything except the circle. This one command saves a huge amount of time in common workflows.

How to Invert a Selection

With any active selection, press Ctrl+I. Or go to Select > Invert.

That is it. The marching ants border will shift to show the new selection boundary. If your whole canvas is now selected (ants appear around the edges), the original selection was inverted to include the rest of the image.

Using Invert for Background Removal

This is the most common use case. It is often easier to select the background (which is usually one color) than to select the subject (which may have complex edges). Once you have the background selected, invert to get the subject, then work from there.

1. Use Fuzzy Select (U) to click on the background.
2. Shift+click any missed background areas to add them to the selection.
3. Press Ctrl+I to invert - Now the subject is selected.
4. Copy and paste to a new layer, or delete the background from the original layer.

This is a central technique in the background transparency workflow and the starting point for composite work where you want to isolate a subject.

Creating a Vignette With an Inverted Selection

A vignette darkens the edges of a photo to draw attention to the center. The invert selection trick makes it fast:

1. Use Ellipse Select (E) to draw a large oval covering most of the image.
2. Go to Select > Feather and set a high radius (80-150px depending on image size).
3. Press Ctrl+I to invert - Now the edges are selected.
4. Create a new layer above the image, fill the selection with black.
5. Set the black layer's opacity to 40-60% for a natural darkening effect.

Other Practical Uses

• Protecting the background while painting: Select the subject, invert, and now any brush strokes only affect the background - the subject is protected.
• Applying an effect outside a shape: Make a shape selection, invert, apply a blur or color adjustment to the surrounding area only.
• Deleting everything outside a crop area: Use Rectangle Select to mark the area to keep, invert, delete the rest on any layer.

Invert works especially well combined with feathered selections. Feather first, then invert, and your inverted selection also carries the soft edges - making any edits to the outer area blend naturally into the inner area.