Empty the Trash
Delete large files you no longer need
Remove duplicate files
Uninstall unused apps
Delete old iPhone and iPad backups
Clear Downloads folder
Remove unused disk images and installers
Delete old screen recordings and videos
Clear browser cache and downloads
Remove Mail attachments
Delete Messages attachments
Optimize storage in Apple menu > System Settings > General > Storage
Enable Store in iCloud for Desktop and Documents
Turn on Optimize Mac Storage for Photos and TV
Move files to an external drive
Use cloud storage for rarely used files
Remove old Time Machine local snapshots
Clear application caches
Delete unused language files and plugins
Review storage recommendations in Mac Storage settings