Mac storage guides
How to find large files on Mac
Scan a disk or folder, compare file sizes, and inspect large downloads, archives and exports before cleaning up.
A nearly full disk may be dominated by a few files or by many smaller ones inside a large folder. FindSpace helps you follow the space from a folder down to the files inside it, so you can decide what is still useful.
Choose the right scope
Use the folder picker to choose a location such as Downloads or a project folder. When the scan finishes, compare sizes in the large-file view. External disks and the startup disk have separate available space.
Follow the large folders
Expand the larger branches in the folder view. Narrow results by name, path and size, or use the category view for cleanup-purpose and related-app totals. Do not add a parent folder’s size to its contents again.
Compare candidates, not just sizes
Inspect old installers, archives and exported videos by path and with Quick Look or Finder. Similar names do not prove files are duplicates. Check that another copy is complete before choosing to remove one.
Choose what to keep
Keep active work and backups you still need. Select a reviewed, unnecessary file and confirm moving it to Trash. After you review and empty the Trash in Finder, refresh the disk information.
What to check next
Compare actual available disk space before and after cleanup. Files you keep can be moved to a chosen iCloud folder; confirm the upload before separately removing the local download. The sum of file sizes is not necessarily the space recovered.
A scan does not delete anything. Preview support varies by file type, and inaccessible items are outside the scan’s visible scope.