To remove duplicate photos on iPhone, start with the duplicate finder iOS has had built in since iOS 16; for most people it is the right first stop. This page covers what it does, the copies it deliberately leaves behind, and how to deal with those without deleting something you wanted.
Remove duplicate photos on iPhone with the built-in tool first
Open Photos, go to Utilities, and look for Duplicates. If the album is not there, you have no duplicates that Photos recognises — it hides itself when empty.
Tap Merge and Photos keeps the highest quality version, combines the metadata from both, and moves the rest to Recently Deleted. Nothing is destroyed for 30 days, so this is a safe thing to do before trying anything else.
It is free, it is already on your phone, and if it clears your backlog you can stop reading here.
What it leaves behind
Photos looks for duplicates in a fairly strict sense — the same image present twice. That misses the two things that actually fill a phone:
- Burst shots and near-identical frames. Eleven photos of the same view, taken in four seconds, differing by a fraction of a degree. None of them are duplicates. Ten of them are clutter.
- Re-saved copies. A photo sent through a messaging app and saved back, or lightly cropped, or exported at a different quality, is a different file with different bytes — so it is not a duplicate by any exact test, even though it is plainly the same picture.
How “near-identical” is worked out
Comparing files byte by byte cannot find these, so the technique is a perceptual hash — a short fingerprint derived from what the image looks like rather than how it is stored. pluris uses a difference hash, which records how brightness changes across the image. Re-save the photo, crop it slightly or compress it, and the fingerprint barely moves. Photograph a different thing and it changes completely.
That is what lets a burst of eleven be presented as one decision instead of eleven, and it is also why the next section matters.
Never let anything bulk-delete on a similarity score
A perceptual hash finds candidates. It does not know which frame has everyone looking at the camera, and it cannot tell a redundant burst frame from the one good shot of a moment that will not repeat.
So the rule for any tool that does this, ours included: look at the pair side by side before you delete either one. An app offering to clear thousands of photos in one tap is offering to make thousands of judgements you have not seen. Photos you delete by accident are the one kind of storage saving you cannot undo after 30 days.
Where the space has actually gone
Duplicates are rarely the biggest number. Video usually is — a few minutes of 4K outweighs hundreds of photographs. Before deleting anything, it is worth seeing what is actually taking the room, because the answer is often four videos rather than four hundred pictures.
Where pluris fits
pluris finds exact duplicate photos and videos and the near-identical ones from burst shots, shows you any pair side by side before you delete a thing, and can compress large photos and videos to reclaim space while keeping the original quality where it counts. It also shows you where your storage has gone.
The pricing rule is that single actions are free and bulk actions are paid. Reviewing a pair and deleting one costs nothing; clearing a whole set at once is Pro.
Every comparison runs on your iPhone. Your photos are never uploaded, there is no account, and there is no server holding anything — the fingerprints are computed on the device and stay there. The pluris privacy policy sets out the detail.
pluris is on the App Store. It is free, needs iOS 18.6 or later, and ships in 22 languages. Download it here.
More
- pluris — calls, messages, contacts and photos, all on the device
- pluris FAQ — permissions, and what happens to the originals
- pluris support — a real inbox