Have you ever needed to make derivatives of a layered PSD? You know, multiple copies of your image but with something different in each, such as the color treatment, type, etc. Maybe you do it like I used to: Make the document, choose save as, give it another name, and repeat for each version. Then you open all the images and make the modifications. There’s a faster way. “What? Now you tell me!” Choose Image>Duplicate, and you’ll see a dialog where you can name the document. Click OK, and the duplicate will open alongside your existing document with all the layers, styles, channels, etc. intact. In fact, it’s a perfect clone of the document on which you’re working, which can be very useful.
This tip previously appeared in Colin Smith’s Photoshop Tips column, in the April, 2019 issue of Photoshop User magazine.