iCloud Shared Photo Library on Mac: Setup Guide

iCloud Shared Photo Library is the heavyweight option for a household's photos: one collection, up to six people, full-resolution originals, and equal rights — everyone can add, edit, favourite, and delete. It's a different beast from Shared Albums, and worth five minutes of understanding before you invite the family. Requires macOS Ventura or later (and iOS 16.1+ on phones).

What you're signing up for

• One organizer creates the library and invites up to five others.
• Everything in the shared library is visible and editable by all participants — deletions included. It's built on trust, not permissions; there is no read-only role.
• Storage counts against the organizer's iCloud plan only. Participants contribute for free, so the organizer should be the person with the 2 TB plan.
• Each person keeps a separate Personal Library; photos are either personal or shared, and you can move items between the two at any time.

Set it up from the Mac

1. Open Photos → Settings (⌘,) → Shared Library tab, and click Get Started.
2. Add participants — up to five, by Apple ID. You can also skip and invite later.
3. Choose what moves in. Photos offers: your whole library; a subset chosen by date (everything after the wedding, say) or by people recognised in shots (photos of the kids); or nothing, moving items manually later. You get a preview step before anything commits.
4. Finish, and invitees accept from their own devices, walking the same choose-what-to-share step with their libraries.

Two preconditions worth checking before you start: every participant needs iCloud Photos turned on (the shared library is built on it), and each person can belong to only one shared library at a time — someone already in their partner's library must leave it before joining yours.

Moving photos to the shared library moves them out of your personal one — they're not duplicated. Anyone can send items back to their personal library later (right-click → Move to Personal Library), so the sorting decision isn't permanent.

Living with two libraries: the view switcher

The Library view gains a toggle in the toolbar (a two-person icon) with three modes: Personal Library, Shared Library, or Both. "Both" is the everyday setting — one merged timeline, with shared items subtly badged. The switcher matters most when adding photos: imports land in whichever library you choose (Photos asks, and the import dialog shows the destination), and you can right-click any photo → Move to Shared Library to share it after the fact.

On the family's iPhones, the camera can even auto-share: sharing suggestions and a camera toggle route photos (like those taken when other participants are nearby) straight into the shared pool — worth knowing so nobody's surprised at what appears.

Deletions, disputes, and leaving

Any participant can delete a shared photo for everyone; it goes to each person's Recently Deleted with the usual 30-day recovery window, and Photos notifies-by-badge rather than asking permission. If that model worries you for a particular set of photos, keep them personal.

Leaving is civilised: Photos Settings → Shared Library → leave options let a departing participant take either everything from the shared library or only what they contributed. The organizer can likewise delete the whole shared library with the same everyone-gets-a-copy choices. Nothing about leaving touches anyone's personal library.

Not sure this is the right tool?

The commitment is real: shared originals, shared deletions, organizer-funded storage. If all you want is "everyone sees the trip photos", the lighter tool wins — Shared Albums cost no storage and give nobody deletion rights over your library.