Creating A Flattened Version Of Your Layered Image
Alright, you’re working on a Photoshop file that has a “bizillion” layers, and you want to create a new layer that’s an exact copy of what your flattened image would look like. First, create a new blank layer by clicking on the Create a New Layer icon at the bottom of the Layers palette, then press Command-Option-Shift-E (PC: Control-Alt-Shift-E). You can also go to the Layers palette’s flyout menu and choose Merge Visible while pressing Option/Alt. Either way, the new layer you created will now have a flattened version of your image.