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Burst photos: the duplicates hiding in your camera roll

Burst photos: the duplicates hiding in your camera roll

Burst and rapid-sequence photos are the biggest source of duplicates in most libraries: several near-identical shots taken within seconds of each other. Find them by looking for photos with the same dimensions taken seconds apart, keep the best one, and delete the rest in a batch.

Someone asked you to take a photo, and you did what everyone does: tapped the shutter five times, just in case someone blinked. Good instinct. Except that was 2021, all five photos are still on your phone, and you did the same thing at every dinner, sunset, and group photo since.

Rapid sequences are the quietest storage leak in your library, because unlike a 400 MB video, no single burst looks like a problem. It's the multiplication that gets you.

Why the Photos app misses most of them

iOS has a Duplicates album (in Utilities), and it's genuinely good at what it does: finding photos that are identical or nearly so, like the same file saved twice.

But the five shutter-taps of the same dinner table aren't duplicates to its eye. Each frame differs slightly: someone's hand moved, the focus shifted. To an algorithm looking for identical images, they're five distinct photos. To you, they're one photo and four wasted slots.

How to actually find rapid sequences

The signature of a burst is simple: same dimensions, seconds apart. Photos taken within a few seconds of each other, at identical resolution, are almost always the same scene shot repeatedly.

You can hunt these manually by scrolling your library and watching the timestamps, but it's exactly the kind of tedious pattern-matching computers do better. Sweep builds a dedicated Bursts pile by scanning your photo timestamps and dimensions on your device: sequences of three or more shots taken within four seconds of each other, at the same size, gathered for review. No cloud analysis, no uploading, just arithmetic on metadata.

The keep-one ritual

For each sequence, the review takes seconds once the shots are side by side:

  1. Sharpness first. Zoom on the faces; motion blur hides at grid size.
  2. Eyes open, everyone. The whole reason you shot five.
  3. Tie? Keep the middle one. First and last frames of a sequence catch the most camera shake.

Keep one, swipe the rest left, and let the batch delete handle the pile. Then finish the job by emptying Recently Deleted, or the space stays occupied for 30 more days.

FAQ

What is a burst photo on iPhone?

A series of photos captured in rapid succession, either with the dedicated burst mode or simply by tapping the shutter repeatedly. They appear as multiple near-identical shots taken within a few seconds.

Does the iPhone Photos app find duplicates?

The Photos app has a Duplicates album that finds exact and near-exact duplicates, but it misses most rapid sequences: shots that are similar rather than identical, taken seconds apart.

How do I decide which photo in a burst to keep?

Open the shots full-screen and compare faces and focus. Keep the one with sharp focus and everyone's eyes open. If they're all equal, keep the middle one; the first and last of a sequence catch the most motion blur.