If you go Colors > Levels... it brings up this window, and the eyedropper I've circled lets you pick which part of the image is 100% white and adjusts the rest.
Thought I'd share since we'd spoken about it before.
If you go Colors > Levels... it brings up this window, and the eyedropper I've circled lets you pick which part of the image is 100% white and adjusts the rest.
Thought I'd share since we'd spoken about it before.