How to find and delete duplicate photos on iPhone

Duplicate photos creep in quietly: a picture saved from a chat twice, an album imported from an old backup, the same screenshot taken for two conversations. Individually they are small. Across years they add up to gigabytes and make the library harder to browse.

There are two kinds, and they need different handling. Understanding the difference is what makes a cleanup both safe and thorough.

Exact duplicates versus similar shots

An exact duplicate is a file-for-file copy: same pixels, same size, usually the same date. Deleting all but one is risk-free because the remaining copy is identical.

Similar shots are the burst of six portraits where one person blinks in four of them, or the three photos of the same sunset taken ten seconds apart. They are not copies; one of them is simply the best. Here the goal is to keep the sharpest, best-exposed frame and let the rest go.

What the built-in Photos app finds

Since iOS 16 the Photos app has a Duplicates album under Utilities. It merges exact and near-exact copies and does that well. It does not group similar shots, screenshots, large videos or blurry pictures, and it has no undo view before merging, so many people only use it once.

If you only want exact duplicates removed, start there. For everything else you need a review tool that groups by similarity and shows you the choice before deleting.

Clearing duplicates with Pruna

1. Open Pruna and let it scan. The analysis runs on the iPhone; nothing is uploaded, and a large library takes a few minutes the first time.
2. Open Duplicates. Each group shows the copies side by side with the suggested keeper already selected. Tap any thumbnail to change the choice.
3. Open Similar. Groups are listed newest first. Pruna preselects everything except the best shot and never selects a photo you have marked as a favourite.
4. Review the summary and confirm. Deleted items move to iOS's Recently Deleted album for up to 30 days, so a wrong tap can be reverted.
5. Repeat for Screenshots, Large videos and Blurry shots if you want the full cleanup, or use Smart Clean to review suggested items from several categories at once.

Keeping the library clean

• Turn on Swipe by month for new photos: swipe right to keep and left to let go, with undo, so each month's additions get reviewed while they are fresh.
• Check the Duplicates category after importing photos from a computer, a camera or a messaging app; that is when most copies appear.
• Favourites are never preselected. Marking the keepers you care about as favourites is the simplest way to protect them in every future review.