There are a few ways to enlarge a layer in Gimp. The easiest way is to use the “Enlarge” command. To enlarge the layer by 100%, type:
Enlarge 100% The “Enlarge” command enlarges the layer by 100%. However, if you want to enlarge the layer by more than 100%, you can also use the “Multiply” and “Divide” commands. To enlarge the layer by 100%, type: Multiply 100% And to enlarge it by 200%, type: Divide 200%