Empty the Recycle Bin
Delete temporary files
Uninstall unused programs
Remove large files you no longer need
Clear Downloads folder
Delete duplicate files
Move files to an external drive
Move files to cloud storage
Use Disk Cleanup
Use Storage Sense
Clear browser cache
Remove old system restore points
Disable hibernation if not needed
Clean up desktop files
Delete unused user accounts
Remove old Windows update files
Compress files and folders
Find and delete large apps and games
Clear app caches
Check storage usage by folder
Run a storage analyzer tool