Start with a storage audit to see what's taking up space

Before you delete anything, find out what is actually consuming your disk space. Windows and Mac both have built-in tools that show you folder sizes without requiring any downloads.

On Windows 10 or 11, open Settings, go to System, then Storage. You will see a breakdown by category — apps, documents, pictures, videos, and other files. Click on any category to drill down and see individual folders. This tells you when ready whether your problem is old videos, duplicate photos, or bloated process files.

On Mac, click the Apple menu, select About This Mac, then Storage. You will see a visual bar showing what is using space. Click Manage to see recommendations and a breakdown of files by type. The Storage tab also shows you which apps are taking the most room.

Key Takeaways

  • Use your operating system's built-in storage tool first — Windows Storage Settings or Mac About This Mac — to see exactly what is consuming space before you delete anything.
  • Delete old downloads, duplicate photos, and temporary files from your Downloads and Documents folders, which often hold gigabytes of forgotten material.
  • Uninstall programs you no longer use through Settings on Windows or Applications folder on Mac, not by dragging them to trash.
  • Move large files like videos, archived projects, or old backups to an external drive or cloud storage to free space without losing them.
  • Clear your browser cache and temporary system files monthly to prevent gradual slowdown from accumulated clutter.

Delete files from your Downloads and Documents folders

Your Downloads folder is often the largest source of recoverable space. Most people read installers, PDFs, and files they needed once and never touch again. Open your Downloads folder, sort by date modified, and delete anything older than a few months that you do not actively use.

Check your Documents folder the same way. Look for old projects, duplicate copies of files, and folders you created for tasks that are finished. If you are unsure whether you need something, move it to an external drive first rather than deleting it outright.

Do the same for your Desktop. Files stored there take up space just like any other folder, and a cluttered desktop often means files you forgot about entirely.

Remove programs you no longer use

Uninstalling unused software is one of the fastest ways to recover large amounts of space. Some applications take several gigabytes, and you may have installed programs years ago that you never opened again.

On Windows, open Settings, go to Apps, then Apps and Features. Sort by size to see which programs consume the most space. Click on a program and select Uninstall. Do not straightforward delete the program folder — uninstalling through Settings removes all associated files and registry entries.

On Mac, open Finder, go to Applications, and drag unused programs to the Trash. Some applications also include an uninstaller in their folder — double-click it to remove the program completely. Empty the Trash afterward to free the space.

Move large files to external storage or cloud backup

Large video files, photo libraries, and archived projects do not need to stay on your main drive. Moving them to an external hard drive or cloud storage frees space while keeping the files safe and accessible.

For videos and photo archives, connect an external drive, create a folder for the files you want to move, and drag them over. Verify the files copied successfully before deleting them from your PC. For ongoing backup, consider cloud storage like OneDrive, Google Drive, or iCloud — these sync automatically and free local space once files are uploaded.

This approach is especially useful for old project files, tax documents, or anything you need to keep but do not access regularly. You still own the files; they just live somewhere else.

Clear your browser cache and temporary files

Browsers store cached images, cookies, and temporary data that accumulate over months. Clearing this out is safe and often recovers several gigabytes.

In Chrome, Firefox, or Edge, press Ctrl+Shift+Delete (Windows) or Command+Shift+Delete (Mac) to open the Clear Browsing Data window. Select All Time, check Cached Images and Files, and click Clear. Do this for each browser you use.

On Windows, you can also use the built-in Disk Cleanup tool. Press Windows key + R, type cleanmgr, and press Enter. Select your C: drive, check Temporary Files and Recycle Bin, and click OK. This removes system temporary files that Windows no longer needs.

Use Disk Cleanup or Storage Sense for automatic maintenance

Windows 10 and 11 include Storage Sense, a tool that automatically deletes temporary files and empties the Recycle Bin on a schedule you set. Open Settings, go to System, then Storage, and toggle on Storage Sense. You can choose to delete files in your Recycle Bin after 30 days or when ready, and delete temporary files that apps are not using.

This prevents your drive from filling up gradually without requiring you to manually clean it every month. You can also run it manually by clicking Clean Now.

Mac users can enable Optimize Storage in System Settings under General, which automatically removes old files and moves them to iCloud when space runs low.

Check for duplicate files and old backups

Over time, you may accumulate duplicate copies of files, old backup folders, or multiple versions of the same document. These are straightforward to miss but can consume significant space.

Search your Documents and Downloads folders for files with names like "Copy of", "Version 2", or "Backup". Delete the older versions you no longer need. Check for old system backup folders — Windows creates restore points that can be deleted if you have a recent backup elsewhere.

If you have multiple external drives or cloud backups, verify you have a current copy before deleting old backup folders from your main drive.

Frequently Asked Questions

How much space should I keep free on my hard drive?

Keep at least 10 to 15 percent of your total drive capacity free. If your drive is nearly full, your PC slows down because the operating system needs space to write temporary files. For a 500 GB drive, that means keeping at least 50 GB free.

Is it safe to delete files from the Temp folder?

Yes. The Temp folder holds temporary files that programs create while running. Once you close the program, these files are no longer needed. You can safely delete everything in the Temp folder without breaking anything. On Windows, the Temp folder is usually at C:\Users\[Your Username]\AppData\Local\Temp.

What should I do if my drive is still full after deleting files?

Move more large files to external storage, or consider upgrading to a larger drive. If you have an older PC with a small solid-state drive, adding a second internal drive or replacing it with a larger one is often cheaper than buying an external drive you have to carry around.

Can I recover files I deleted by mistake?

Files in the Recycle Bin (Windows) or Trash (Mac) can be restored by right-clicking and selecting Restore. Once you empty the Recycle Bin or Trash, recovery is much harder. If you need to recover permanently deleted files, third-party recovery software may help, but success depends on how long ago the file was deleted and whether new data has been written over it.

How often should I clean up my storage?

Once a month is reasonable for most users. If you read a lot of files or install and uninstall programs frequently, clean up every two weeks. With Storage Sense enabled on Windows, much of this happens automatically, so manual cleanup becomes less critical.