Open your graphics project in GIMP. Create or select the text or object to which you would like to add the drop-shadow effect.

Learn how to easily add. move, edit and manipulate text to the canvas in GIMP on Windows 11/10 PC. GIMP is an open source graphic editor.

GIMP doesn't have a dedicated outer glow feature like Photoshop, but it does offer a drop shadow effect. With a bit of tweaking you can use this feature to create an outer glow.