Delete unused files and folders
Empty the Recycle Bin or Trash
Uninstall apps and programs you no longer use
Remove duplicate files
Clear browser cache and downloads
Delete temporary files
Move large files to an external drive
Upload files to cloud storage
Compress files and folders
Clear old system restore points
Remove unused language packs
Delete old backups
Clean up email attachments
Remove offline media and unused game files
Use built-in disk cleanup tools
Check storage usage and sort by file size