I went looking for the largest files on our almost-full shared drive, and found a few that could be moved, but I'm finding that one of the biggest issues is people saving a giant trove of full-size iPhone pictures. One person had transferred them zipped, then unzipped them, and they were taking up gigs and gigs of space 4-7MB at a time. I've been going through and finding these and bulk-resizing the photos, which we do want to keep, but not at original resolution.



I wish File Explorer could give me a list of the individual subfolders with the largest total size, so they could be inspected for zipping or reducing file size. I remember our former IT consultant mentioned a utility to me. I thought it was TreeSize Free, but it turns out that will only work on local drives, not on our server.

Just to update this: I had WizTree and some other stuff recommended, but decided to just do an Excel PowerQuery, with file sizes, then did a Pivot Table by folder path. This has the benefit of being updatable, and also I could then filter to include or exclude the types of materials I could, or couldn't, compress or reduce. I can use the same setup later to look for old Adobe PDF's which haven't been reduced in size.