Install the Remove Duplicates add-on from the Google Workspace Marketplace. In your sheet, click Extensions, then Remove Duplicates, and choose: Find Duplicates or Uniques.

If you need to reconcile batches of records in Microsoft Excel, this simple VLOOKUP() solution offers a quick and easy way to find records in one batch that are missing from another.

Microsoft Power Query requires less specialized knowledge when trying to find duplicate records in a Microsoft Excel sheet.

It’s easy to remove duplicates from a list in Java. There are a variety of functions in Java that simplify that process. Finding duplicates in a Java list? That’s actually a bit more complicated, but ...

Manually remove duplicates from Google Contacts for the web Open contacts.google.com in your favorite web browser and sign in to your Google account. Do a manual scan to find duplicated contacts ...

In previous versions of iOS, relying on your iPhone to automatically track down duplicate photos in your Photo Library wasn't an option, and if ...

Apple has added a new "Duplicates" album to Photos on iOS 16, and given us the tools to save space by safely deleting unwanted extra copies of images.

Apple added a new de-duplication feature in iOS 16, iPadOS 16, and Ventura, but it requires a little care to ensure you retain the right copy.