Quick answer: Check which categories use the most storage, remove large downloads and unused apps, empty the recycle bin or trash, and move important photos and videos to a separate backup.
A nearly full computer can become harder to update and slower to use. Review large files before deleting anything, and keep a backup of files you cannot replace.
Check what is using storage on Windows
- Open Settings.
- Go to System → Storage.
- Review categories such as Apps, Temporary files, Documents, Pictures, and Other.
- Open the largest categories and remove items you no longer need.
Windows may provide Storage Sense to remove temporary files automatically. Review its settings before enabling automatic deletion.
Check what is using storage on Mac
- Open the Apple menu.
- Choose System Settings.
- Open General → Storage.
- Review Applications, Documents, iCloud Drive, Messages, and other categories.
- Use the recommendations that match your needs.
Menu names may differ by macOS version.
Remove large downloads
The Downloads folder often contains installers, videos, compressed files, and duplicates. Sort by size and open files before deleting them.
Empty the Recycle Bin on Windows or Trash on Mac afterward. Until then, the files may still occupy storage.
Uninstall apps you do not use
Remove applications through Windows Settings or the Applications folder on Mac. Do not delete random folders from system locations to uninstall software.
If an app includes its own uninstaller, use it.
Find large files
Search for large videos, project files, old installers, virtual machines, and duplicated folders. Move important files to an external drive or trusted cloud service before removing the local copy.
Do not delete system files simply because they have unfamiliar names.
Review cloud-storage settings.
Cloud services may keep offline copies of files. Use online-only or storage-optimisation options where appropriate, but confirm that you can access the files online before removing local copies.
Clear temporary files carefully.
Use Windows Storage settings or the Mac’s built-in storage recommendations. Avoid unknown “cleaner” apps that promise dramatic speed improvements and request broad system access.
Final verdict
Start with storage settings, downloads, unused apps, and large personal files. Back up important data before deleting it, and avoid third-party cleaners that make unclear promises.
