How to free up disk space on a Mac

1. See where the space actually went

Start in System Settings → General → Storage. Apple's categories are a useful overview, but they rarely tell you which folder or leftover app is the real culprit.

For folder-level detail, use a visual storage map. Duply includes a treemap and file-type breakdown so you can spot the big offenders before you delete anything. See the Mac disk cleaner overview if you want the full feature list.

2. Clear junk and caches (safely)

Caches and temporary files are often the easiest win. They rebuild when apps need them. What you should not wipe casually: system files, Keychain items, preferences you still use, or anything under protected paths.

A good cleaner shows a preview and puts removals in Trash by default. Read how to clear Mac cache safely for the short version of what is reclaimable.

3. Find duplicate files

Downloads folders and photo exports are duplicate magnets. Sorting by name misses renamed copies. Hash-based detection compares file content, so identical files surface even when filenames differ.

Keep one copy, drop the rest. Full walkthrough: find duplicate files on Mac.

4. Hunt large files

Common space hogs on Macs:

• Old installers (.dmg, .pkg) sitting in Downloads
• Video exports and screen recordings you forgot about
• Huge archives and zip files after extraction
• iOS backups and Xcode derived data (if you develop)

Sort by size, review each item, then move to Trash. Recoverable by default beats permanent delete until you're sure.

5. Uninstall apps the thorough way

Dragging an app to Trash often leaves support files, caches, and preferences behind. An app uninstaller that removes leftovers reclaims more than the icon alone.

6. Empty Trash and check Storage again

Space only returns after Trash is emptied. Then reopen Storage settings and confirm the categories moved. If you're still tight, review login items and large media libraries next — not random "system cleaner" buttons that claim threats.

What to avoid

• Scare tactics — red "threats" banners that push a subscription
• Blind one-click cleans — no preview means you can't verify what disappears
• Accounts for a utility — a disk cleaner shouldn't need your email

If you're comparing options, start with best Mac cleaner, CleanMyMac alternative, or free Mac cleaner tradeoffs.

The short path with Duply

1. Scan for junk, duplicates, and large files
2. Review the list and uncheck anything you want to keep
3. Move to Trash (or delete permanently if you choose)

Duply is a native macOS 14+ app, sandboxed and on-device, for a one-time $4.99. No subscription, no account, nothing leaves your Mac.