Biggest wins
Ranked by how much space you'd get back. Nothing here is deleted for you — every row links out to Drive so you decide.
Each rectangle is sized by how much space it takes up. Click a folder to go into it, use the breadcrumb to come back out.
Where the space goes, by kind of file
By file extension
By age (last modified)
Large and untouched
Files over 50 MB that haven't been modified in more than two years — the usual candidates for archiving off Drive.