Empty the Trash
Delete large files you no longer need
Remove duplicate files
Uninstall unused apps
Clear Downloads folder
Delete old iPhone/iPad backups
Remove unused language files
Clear browser cache and downloads
Delete old DMG and ZIP files
Remove large email attachments
Move photos and videos to external storage or cloud
Use Apple menu > About This Mac > Storage > Manage
Enable Optimize Storage
Reduce clutter in Desktop and Documents
Clear application caches
Remove unused browser extensions
Restart Mac after cleanup