My personal “JDI” list of Photoshop tweaks includes a request to make the Cmd-J/Ctrl-J keyboard shortcut duplicate multiple layers (and/or layer sets) at once. That change hasn’t been made yet, but scripter David Jensen has a solution: Install a script that dupes layers, then assign Cmd-J to it. It’s very easy to do:
- Download this script and drop it into your Photoshop CS5/Presets/Scripts folder. (I’ve only tried it in CS5, but I’d imagine it works in previous versions, too.)
- Choose Edit->Keyboard Shortcuts, then choose File->Scripts->Duplicate Layers and assign Cmd-J.