How to Find Similar Photos in Google Photos

Google Photos groups only burst sequences the camera tagged at capture, under Library → Utilities → Review and Delete. Photos that merely look alike are never grouped. To find them, use a perceptual-hash tool with a loosened similarity threshold, which clusters near-identical shots and pre-selects the sharpest frame.

Similar is not the same as duplicate

The distinction decides how much thought a cleanup takes. A duplicate is the same image stored twice, so deleting one copy loses nothing and needs no judgement. A similar photo is a genuinely different image of the same moment — a second attempt, a slightly different angle — and choosing between them is a decision about the picture, not the file.

That is why tools handle the two categories separately, and why a similar-photos pass takes longer than a duplicates pass. If what you actually have is repeated copies rather than repeated attempts, start with finding duplicate photos in Google Photos instead — it is the faster win.

The similarity spectrum

What Google Photos actually groups

Exactly one thing: burst sequences your camera flagged as a burst when it took them. Review and Delete shows those as a stack with a suggested keeper. It is worth using, and it covers a small slice of the problem — because the metadata comes from the camera, not from any analysis of what the photos look like.

Everything else is invisible to it. Three separate taps of the shutter a few seconds apart are three unrelated photos as far as Google is concerned. So is the same photo re-saved from a messaging app. The upload-time hash check that Google does run is exact-match only, as explained in does Google Photos have duplicate detection, and it never runs across your existing library at all. The burst-specific walkthrough is in cleaning up burst and similar photos.

How near-duplicate detection works

A perceptual hash reduces an image to a small grid of light and dark values and encodes that pattern as a short fingerprint. Two photos of the same scene produce fingerprints that are close together even at different resolutions or compression levels, because the overall structure survives what compression throws away.

Comparing fingerprints gives a distance, not a verdict. Set the threshold tight and you get only near-identical copies; loosen it and you start clustering different frames of the same moment. That single dial is what separates a duplicates view from a similar-photos view, and it is why one scan can produce both.

How to clean up similar photos, step by step

1. 1

   Start with Review and Delete's burst shots

   Library → Utilities → Review and Delete groups sequences the camera itself tagged as a burst and suggests a keeper. It is free and it is the only similar-photo grouping Google offers.

2. 2

   Search by date to find the rest

   Most similar shots are not tagged bursts — they are three or four attempts seconds apart. Open the day they were taken and compare side by side.

3. 3

   Scan with a similarity threshold

   A perceptual-hash tool scores how alike two images are. Loosening that threshold turns a duplicates scan into a similar-shots scan, which is what groups the near-misses.

4. 4

   Judge the group, not the file

   Sharpness and resolution can be ranked automatically; whether everyone's eyes were open cannot. Review each group and override the suggested keeper when it is wrong.

5. 5

   Keep one, delete the rest, empty Trash

   Deleted photos hold your quota for 60 days in the Google Photos Trash. Empty it once you are happy with what you kept.

Which copy should you keep?

A tool can rank the technical qualities: resolution, file size, and a sharpness score derived from edge contrast. Those are good defaults and they are right most of the time — the blurriest frame of a burst is rarely the one you wanted. Blurry shots have their own dedicated pass in deleting blurry photos in Google Photos.

What no scoring function knows is which frame has the expression you wanted. Treat the pre-selection as a starting point, skim the group, and override it when it is wrong. The 60-day Trash means an overridden call is still recoverable, so the cost of moving quickly is low.

Frequently asked questions