Empty the Recycle Bin
Delete temporary files
Run Disk Cleanup
Use Storage Sense
Uninstall unused apps and programs
Move large files to another drive
Move files to external storage
Move files to cloud storage
Delete duplicate files
Clear browser cache
Remove old downloads
Delete unnecessary system restore points
Reduce space used by System Restore
Disable hibernation
Clean up Windows Update files
Remove unused user accounts
Compress large files and folders
Move game libraries to another drive
Change default save locations
Find and delete large files
Remove old backups
Clear thumbnail cache
Delete log files
Remove offline maps
Clean up mail attachments
Uninstall optional Windows features
Shrink or delete unused partitions
Use a disk space analyzer tool