I want my image to have 60% transparency. How can I do this in gimp?


Just use the hotkey Ctrl+L or go to 'Windows → Dockable Dialogs → Layers'. This should open the layers panel with an opacity slider, that you can slide to change the transparency. (source)

  • 1
    This solution doesn't work for Mac, BTW. The <kbd>Cmd</kbd> + <kbd>L</kbd> equivalent of that shortcut does nothing, and the menus aren't comparable. – jvriesem Apr 14 '17 at 20:34
  • The shortcut listed does not work on Linux – Ferrybig Jan 23 '19 at 12:14

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