How to Free Up Storage on macOS Ventura

A 256GB Mac running Ventura has a way of showing 9GB free no matter what you delete. Drag 5GB to the Trash, empty it, check again — still 9GB free. The reason is usually local Time Machine snapshots, which Ventura is particularly aggressive about creating, plus a handful of stubborn Ventura-era cache locations.

Here’s what actually moves the needle on macOS 13.

Ventura-specific storage offenders

A few things grow on Ventura specifically:

• Local Time Machine snapshots — Ventura takes them often, and won’t let APFS reclaim the space until they’re deleted manually.
• Stage Manager state — ~/Library/Saved Application State/com.apple.WindowManager.savedState/ keeps window arrangements indefinitely.
• Continuity Camera cache — using your iPhone as a webcam stores recent video segments locally for instant resume.
• System Settings (the new redesign) caches in ~/Library/Caches/com.apple.systempreferences/ more than the old System Preferences ever did.
• Mail content index — the index file sometimes balloons to several gigabytes after a major upgrade.

Knowing where the version-specific bloat lives makes the cleanup faster.

Step 1: Get current first

System Settings → General → Software Update.

Make sure you’re on the latest 13.7.x point release. Several of the Ventura-era storage bugs were fixed in late point releases. Earlier versions of Ventura had a known issue where uninstalled apps left behind much more cache data than intended.

Step 2: Look at storage honestly

System Settings → General → Storage. Wait a minute for the bars to populate.

Click each category for the breakdown. Pay attention to:

• Documents — includes Downloads, Desktop, Documents folder. The biggest surprise for most users.
• System Data — what we’ll mostly tackle below.
• Apps — sort by size, audit anything 1GB+.
• macOS — should be 12–18GB.

Step 3: The obvious wins

Cleanup, in order:

1. Downloads folder — sort by Date Added, delete anything more than a month old.
2. Trash — empty (right-click each Trash in the Dock).
3. Desktop — sort by date.
4. Movies — old screen recordings.
5. Old iOS backups — ~/Library/Application Support/MobileSync/Backup/. Sort by date, keep newest, nuke the rest.

Most users find 20–60GB this way without touching anything technical.

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Step 4: Time Machine local snapshots — Ventura’s worst offender

Ventura keeps local snapshots even when you don’t have a Time Machine drive connected. They can grow to 30–60GB and don’t show in Storage’s breakdown.

Terminal:

tmutil listlocalsnapshots /

You’ll see entries like com.apple.TimeMachine.2025-09-15-082311.local. Delete the oldest:

tmutil deletelocalsnapshots 2025-09-15-082311

Or delete all of them at once:

for snap in $(tmutil listlocalsnapshots / | awk -F. '{print $4}'); do tmutil deletelocalsnapshots $snap; done

macOS will create fresh ones as needed. This step alone often recovers 30GB+.

Step 5: Photos library

If you have iCloud Photos and “Optimize Mac Storage” is off, your Mac is keeping originals of every photo and video.

System Settings → Apple ID → iCloud → Photos. Toggle on Optimize Mac Storage.

Don’t forget to empty Recently Deleted in the Photos app — items stay there 30 days otherwise.

Step 6: Mail attachments

Mail in Ventura caches every attachment locally even when they’re already on the IMAP server.

In Mail → Settings → Accounts → select account → Account Information → “Download Attachments”. Set to Recent or None.

To clear what’s already cached, quit Mail, then check:

~/Library/Mail/V10/MailData/

Per-account Attachments/ folders are safe to delete. Mail re-downloads on demand.

For the Mail index specifically: if Mail is also slow, drag ~/Library/Mail/V10/MailData/Envelope Index to Desktop, relaunch Mail, let it rebuild. Often shrinks the file dramatically and fixes search.

Step 7: Cache cleanup — the real offenders

Quit the app first, then clear:

• Xcode DerivedData: ~/Library/Developer/Xcode/DerivedData/ (10–50GB if you build iOS projects)
• Xcode Simulators: ~/Library/Developer/CoreSimulator/Caches/ and old simulator runtimes
• Chrome: ~/Library/Caches/Google/Chrome/Default/Cache/
• Slack: ~/Library/Application Support/Slack/Cache/ and Service Worker/
• Spotify: ~/Library/Caches/com.spotify.client/Data/
• Stage Manager state: ~/Library/Saved Application State/com.apple.WindowManager.savedState/

For Spotify, the in-app option (Settings → Storage → Clear Cache) is fine, or just delete the folder while Spotify is closed.

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Step 8: iOS backups (worth a separate step)

~/Library/Application Support/MobileSync/Backup/

Each subfolder is a complete device backup. macOS doesn’t auto-rotate. A Mac that has been used for iPhone backups for several years routinely holds 50–80GB here.

Open the folder. Sort by date modified. Keep the most recent backup per device. Delete the rest.

You can also do this through Finder — connect an iPhone, select it in the sidebar, click Manage Backups under Backups.

Step 9: Old macOS installers

After upgrading from Monterey to Ventura, an “Install macOS Ventura.app” might still be in /Applications/. It’s 12GB. Drag to Trash.

Check /Library/Updates/ for partial update files too.

Step 10: Uninstall unused apps cleanly

Dragging an app to Trash leaves files in:

• ~/Library/Application Support/<AppName>/
• ~/Library/Caches/<AppName>/
• ~/Library/Preferences/<AppName>.plist
• ~/Library/Logs/<AppName>/
• ~/Library/Containers/<AppName>/ for sandboxed apps
• LaunchAgents in ~/Library/LaunchAgents/

For complete uninstall, hunt those down manually or use a dedicated uninstaller. Sweep’s uninstaller does this in one click and shows you what it’s removing before committing.

Step 11: Continuity Camera cache

If you’ve ever used your iPhone as a Mac webcam, recent session data is cached in:

~/Library/Caches/com.apple.continuity.camera/

Safe to delete. macOS recreates as needed.

Step 12: Move large libraries off the internal drive

If you’ve cleaned everything reasonable and you’re still tight:

• Photos library — hold Option while opening Photos to choose a new location.
• Music library — Music → Settings → Files → change location.
• Final Cut / iMovie projects — both support external libraries natively.
• Old document archives — anything older than a year you don’t actively reference.

A $60 1TB external SSD over USB-C solves the storage problem permanently for most users.

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Common Ventura myths to skip

A few things that aren’t worth your time:

• Manually deleting language files — System Integrity Protection blocks most of it. Tools like Monolingual stopped being meaningful on Ventura.
• Disabling Time Machine local snapshots permanently — they’re useful insurance. Trim them periodically rather than turning them off.
• purge command in Terminal — it doesn’t free disk space, only memory.
• Reinstalling Ventura to free space — it won’t. The OS files aren’t the problem; your data and caches are.

If you ran through the steps above and you’re still under 20GB free on a 256GB Mac, the next questions are: how big is your Photos library, and how much do you actually need on this device versus an external drive? Those are the real long-term levers.