GIMP "color to alpha" is not selectable?

Question

Do I have to do something "special" to get the **Color** -> **Color to alpha** menu option to work in GIMP? I am trying to convert a background color on a GIF image to transparent by converting the background color to an alpha channel but the Color to Alpha menu option is not selectable.I've gone through the GIMP documentation and it looks pretty simple :-) I must be missing something rather obvious here!

Answer 1

Have you checked if you've got something selected? Try making a new layer and doing CTRL+SHIFT+A to deselect and then try color to alpha.

If that doesn't work you can try my trusty workaround of using the select by color tool and delete.