Feeling like your Mac is running out of space faster than it should? You’ve emptied the Trash, cleared out Downloads, but somehow your storage is still gasping for breath. Welcome to the club! In 2025, macOS is sleeker than ever, but it still has its hidden hoarders sucking up space. Let’s dig deep, toss the unnecessary stuff, and make your Mac feel brand new without doing a full reset.

TL;DR

Freeing up disk space on macOS in 2025 goes beyond just deleting files from your Trash. You should clear cache, search for large old backups, remove duplicate files, and check hidden system folders. Built-in tools help, but third-party apps can save time. Do this regularly and your Mac will thank you!

1. Start with Built-in Storage Tools

Apple already gives you a good overview of what’s using up space.

  • Click the Apple menu in the top left.
  • Select About This Mac → Storage → Manage.

You’ll see categories like “Documents,” “System Data,” and “Other.” These aren’t always self-explanatory, but it’s a great place to begin.

Tip: Use the built-in “Reduce Clutter” feature. It helps find large files you may have forgotten about.

2. Remove Cache Files

Caches are temporary files macOS and applications use to run faster. But over time, they grow wild.

To clear them manually:

  1. Open Finder.
  2. Click Go in the top menu → Go to Folder.
  3. Type ~/Library/Caches.
  4. Delete contents of folders, but not the folders themselves.

Be careful! Don’t delete anything unless you’re sure what it is. Caches are safe to delete, but system files are sacred.

CocoFinder

3. Say Goodbye to System Junk & Hidden Files

Your Mac loves hiding files. System logs, extra language packs, iOS backups — they all pile up quietly.

Search for:

  • System Logs: Found in /var/log
  • Language Files: Most apps come with multiple translations you may never use
  • iOS Backups: Check ~/Library/Application Support/MobileSync/Backup/

You can remove them manually. But if that sounds risky, use a safe third-party cleaner like CleanMyMac X or DaisyDisk. They make things visual and easy.

4. Hunt Down Duplicate Files

Duplicate files are sneaky. You might not even realize you have two (or three, or ten) copies of the same video or photo.

Try using apps like:

  • Gemini 2 – Detects and removes duplicates quickly.
  • DupeGuru – A free classic with customizable search tools.

You can also sort your folders by size and manually check for files with similar names. It takes time, but it works.

5. Review Large Files

Sometimes it’s not the number of files — it’s their size. Your Mac’s storage manager will help, but you can also try this:

  1. Open Finder.
  2. Press Command + F to start a search.
  3. Change filter to File Size > is greater than > set to something like 500 MB.

You’ll see big space-eaters that you can back up or delete.

6. Clear Application Leftovers

When you drag a program to Trash, it doesn’t always remove everything. Preference files, support folders, caches — they’re still around.

To do a deep clean:

  • Go to ~/Library/Application Support and ~/Library/Preferences.
  • Look for folders named after apps you’ve deleted.
  • Trash them if you’re completely done with those apps.

Again, tools like AppCleaner (free) or CleanMyMac help automate this and reduce risk.

7. Clean Up Mail Downloads

Using the Mail app a lot? All those attachments are saved locally.

Find them in: ~/Library/Containers/com.apple.mail/Data/Library/Mail Downloads

Delete anything you don’t need. Attachments like PDFs and photos can quietly chew through gigabytes.

8. Optimize iCloud Storage

macOS integrates beautifully with iCloud. Use it!

Steps to activate optimization:

  1. Go to Apple Menu > System Settings > iCloud.
  2. Choose Optimize Mac Storage.

This keeps full-resolution files in the cloud and stores lightweight versions locally. It’s smart and seamless—just keep your iCloud plan updated if you run out of web space.

9. Manage Time Machine Backups

Did you know your Mac stores local snapshots of Time Machine backups — even if your external drive isn’t connected?

You can check and delete them using Terminal (don’t worry, it’s safe):

  1. Open Terminal.
  2. Type: tmutil listlocalsnapshots /
  3. To delete, type: sudo tmutil deletelocalsnapshots {snapshot name}

Or, simply plug in and back up to your Time Machine drive. This clears out old local snapshots.

10. Move Media to External or Cloud Storage

Photos, videos, and music can be massive. Offload what you don’t need to access daily.

Options:

  • Use Google Drive, Dropbox, or iCloud to store media online.
  • Buy a sleek SSD and move entire folders over.

Just make sure you update file paths in apps like iTunes or Photos afterward.

11. Bonus Tip: Keep Your Desktop Clean!

Your desktop isn’t just a visual space. macOS treats each icon like a mini window, using up RAM and processing power.

Move files into folders. Create a “To Sort” folder if needed. A clean desktop means better speed and lower storage bloat.

Final Thoughts

Your Mac doesn’t need a full reset to feel new. With a bit of digging, you can squeeze out gigabytes of free space hiding in plain sight (or… invisibly).

Make it a habit: once a month, go through these steps. Or even easier, use reliable cleaning tools to set reminders and auto-clean routines.

Now go enjoy that extra room. Maybe it’s time to re-download that massive game, security in knowing you’ve made space the smart way.