There are a few steps you can take to change an image to black and white in Gimp. First, open the Image Editor and select the image you want to change its color to. Then, click on the Edit button and select the Black & White option. Next, click on the OK button to close the Image Editor. Finally, open Gimp and select the image you want to change its color to. Then, click on the Edit button and select Black & White again.
