Search guides

Fix a Mac that has Photos full

We'll optimize the Photos library, enable Optimize Mac Storage, and remove duplicates or old videos—or move the library to an external drive.

Troubleshooting · Home maintenance
10–30 min
What you'll need
  • Photos app
  • External drive (optional, for large libraries)
Step 1 of 5

Quick triage — pick your path

Get started

Choose the option that matches what you see. You can jump straight to that section.

Show full guide

Steps

Goal: Free disk space used by the Photos library.

  • Enable Optimize Mac Storage in Photos.
  • Empty Recently Deleted.
  • Remove duplicates and export large videos.
  • Move the library to an external drive if needed.

Optimize storage

Goal: Keep originals in iCloud and thumbnails locally.

  • Photos → Settings → iCloud → Optimize Mac Storage.
  • Good: Photos uploads originals and frees local space over time.
  • Bad: iCloud full—see Fix iCloud full.

Remove duplicates and videos

Goal: Delete duplicates and move large videos off the Mac.

  • File → Show Duplicates. Delete duplicates.
  • Export large videos to external drive, then delete from Photos.
  • Good: Library size decreases.
  • Bad: No duplicates or videos—consider moving the library to an external drive.

When to get help

Call a pro if:

  • The library is corrupted and Repair fails.
  • You need help organizing years of photos.

Verification

  • Photos uses less disk space (check in About This Mac → Storage).
  • Recently Deleted is empty.
  • Photos opens and scrolls normally.

Escalation ladder

Work from the device outward. Stop when the problem is fixed.

  1. Optimize Mac Storage Enable in Photos Settings; originals move to iCloud.
  2. Empty Recently Deleted Delete All in Recently Deleted.
  3. Remove duplicates and videos Delete duplicates; export and remove large videos.
  4. Call a pro Corrupted library or need data recovery.

What to capture if you need help

Before calling support or posting for help, have these ready. It speeds everything up.

  • Library size and location
  • Optimize Mac Storage: on or off
  • Whether Recently Deleted was emptied
  • Steps already tried

Is Optimize Mac Storage enabled?

This keeps originals in iCloud and frees local space.

Photos → Settings → iCloud. Enable Optimize Mac Storage. Good: enabled—empty Recently Deleted next. Bad: already on—check duplicates and videos.

Yes No

You can change your answer later.

Enable Optimize Mac Storage

Photos → Settings → iCloud → Optimize Mac Storage. Wait for Photos to upload originals and remove local copies. This can take hours for large libraries.

Done

Is Recently Deleted empty?

Items here use space for 30 days.

Photos → Recently Deleted → Delete All. Good: empty—check duplicates and videos. Bad: already empty—export videos or move library to external drive.

Yes No

You can change your answer later.

Empty Recently Deleted

Recently Deleted → Delete All. Then check duplicates and videos.

Done

Do you have large videos?

Videos use the most space.

Export large videos to external drive, then delete from Photos. Or enable Optimize Mac Storage if not already on. Good: space freed. Bad: no large videos—library may need repair or external move.

Done

Reviewed by Blackbox Atlas

Frequently asked questions

Why does Photos use so much space?
Full-resolution originals stored locally, videos, and duplicates. Optimize Mac Storage keeps originals in iCloud and thumbnails locally.
Can I free Photos space without losing photos?
Yes. Enable Optimize Mac Storage—originals stay in iCloud. Or export to an external drive before deleting.
When should I use Optimize vs Download Originals?
Optimize saves space—use when disk is full. Download Originals keeps everything local—use when you have plenty of space and want offline access.

Rate this guide

Was this helpful?

Continue to