Mac OS Sierra and later includes a storage management app to quickly review and free up used space on your hard drive. This app eliminated the needs for a 3rd party space analyzer app. In order to access the Storage Management app, follow the steps below.
1st Method to Access Mac Storage Management App
Right-click your hard drive and choose Manage Storage
2nd Method to Access Mac Storage Management App
-> About This Mac -> Storage tab -> Manage
3rd Method to Access Mac Storage Management App
Go menu -> Go to folder… -> type /System/Library/CoreServices/Applications and hit go
When you open the Storage Management app, you see your Mac hard drive space at a high level. The app includes recommendations for the following.
Store in iCloud
Use this option to move content off your Mac into your iCloud account
Set your Mac to automatically remove watched movies in iTunes and only store most recent email attachments in Mac OS mail.
Empty Trash Automatically
Automatically delete trash older than 30 days.
Browse your Mac’s largest files, downloads, or use the built-in file browser to drill down file sizes by their folder.