How to organize digital photos on a Mac

Organizing digital photos works in four steps, and the order matters: gather every photo into one place, remove the duplicates, cut the obvious misses, then give what’s left a structure you can search. Most people start with the structure and stall halfway, because they’re sorting a pile full of copies.

Let’s take the steps in order.

Step 1: Gather every photo into one place

Photos end up everywhere: the phone, a laptop, the Photos app, old hard drives, a Downloads folder, a cloud account you set up once. Every digital photo you own needs to end up in one place before sorting makes sense. You can’t organize what you can’t see all of.

Pick one home, then bring everything to it:

• The Photos app, if you view, edit and share your photos there.
• Folders on an external hard drive, if you shoot on a camera, keep RAW files, or want an archive any computer can open.

If the home is an external drive, how to store photos on an external hard drive covers both setups. If some of the photos are on an old drive, get the data off the old hard drive first.

Copy everything into the new home before you delete anything from the old places.

Step 2: Remove the duplicates before you sort

This is the step that makes the rest bearable. A photo collection gathered from four places carries the same photos several times over: the same card imported twice, the same folder backed up twice, the same picture saved from a message thread. Sort first and you’ll sort every one of those copies.

Inside the Photos app, the built-in Duplicates collection finds and merges copies for free. For photos in folders and on drives, you need something that compares file contents. How to find and delete duplicate photos on a Mac covers both, including a free Terminal command.

Step 3: Cut the obvious misses

Don’t try to pick the best photos yet. Only remove what nobody will ever want: the blurry shots, the accidental pocket photos, the twelve near-identical frames from a burst where one is enough, the screenshots of parking spots.

Go a month at a time. It’s faster than it sounds, because misses are easy to spot, and you’re not making hard decisions yet.

Step 4: Give what’s left a structure

The Photos app and folders split at this step.

If your photos live in the Photos app

• Albums for events. An album holds a photo without moving it, so one photo can sit in several albums.
• Keywords for what you’ll look for later. Select photos, click the Info button in the toolbar, and type in the Add a Keyword field. For many photos at once, choose Window > Keyword Manager and click keywords to assign them. You can even give a keyword its own keyboard shortcut.
• Smart Albums for anything that follows a rule. Choose File > New Smart Album, name it, and set the conditions, such as a keyword or a date range. It fills and updates on its own as new photos match.

If your photos live in folders

A simple folder structure outlasts any app:

• One folder per year, one folder per event inside it: 2024/2024-07 Lake trip.
• Date first in every folder name, so Finder sorts them in time order.
• Edits in their own folder next to the originals, so you never overwrite what came off the camera.
• Rename in batches. A camera file name like IMG_4412.jpg can become Lake trip 001 in one pass. How to batch rename files on a Mac shows how.

Make them findable later

A structure tells you where a photo lives. Finding it a year later is a different problem, because nobody remembers which month the kayaking trip was.

Keywords in the Photos app solve it for photos you tagged, and the Photos app also groups the people and pets it recognizes, which helps with family photos. The catch is that someone has to type the keywords, and on a collection of tens of thousands of photos, nobody does.

How to organize 30 years of photos

A lifetime of family photos is the same four steps, done in chunks, and it usually means a few hard drives’ worth:

• Gather all of it first. Every drive, every old laptop, every account, into one home.
• Remove duplicates across the whole collection, not one decade at a time. The same photo often lives in 2009 and in a 2015 backup.
• Then go one year at a time, newest first. Recent years matter most to most people, and the momentum carries you into the older ones.
• Scan prints last, and file the scans into the same year folders.

Using SupaDupa to organize photos on your drives

SupaDupa is a Mac app built for photo collections spread over folders and drives.

• Exact duplicates are free to find and trash, with no file limit, and copies go to the macOS Trash.
• Similar photos are a Pro feature: the same shot exported twice at different sizes. It reads JPEG and PNG. HEIC and RAW aren’t compared for look-alikes, though exact copies of them are still found.
• It tags photos by what’s in them, so you can search “kayaking 2019” without anyone typing a keyword. Tagging is free on one folder you pick and part of Pro everywhere else.
• It remembers every drive, so search keeps working after you unplug one.
• Tidy proposes where photos should go and what folders should be called, and shows you every change before anything moves. Folder naming from contents needs Pro and an Apple Silicon Mac with 16 GB of memory.

Leave the Photos library to the Photos app, and point SupaDupa at your photo folders and drives. Pro is $49, once.

Before you start

• Back up the whole collection first, before you delete a single photo.
• Don’t reorganize inside the Photos library in Finder. The Photos app manages what’s in there. Organize it from inside the app.
• Do one year per sitting. A whole collection in one weekend is how the job gets abandoned.
• Keep the originals. Edit copies, never the only version.

Gather, deduplicate, cut the misses, then sort. Doing it in that order means you only touch each photo once.