This step-by-step guide shows you how to use your iPhone's built-in tool to find and merge all duplicate photos and videos.

In previous versions of macOS, relying on your Mac to automatically track down duplicate photos in your Photo Library wasn't an option, and if you wanted to purge your library of duplicates you had to ...

How to generate random numbers with no duplicates in Excel Your email has been sent Over the last few months, I’ve written about several of Excel’s new dynamic array functions. They’re powerful and ...