9.4.  The RGB mode

You are normally working in RGB mode, well adapted to screen. See Glossary . You can change RGB to Grayscale or Indexed, but be careful: once the image saved you can no longer retrieve the RGB colors. Work on a copy. If your image beholds an Alpha channel, this will be rejected by the conversion process as these modes don't support Alpha Channel.

9.4.1.  Activate Dialog

  • This command can be accessed from an image menubar as ImageModeRGB.