How to find what's using your disk
- Download Broom and open itIt's 8 MB.
- Give it Full Disk AccessSystem Settings › Privacy & Security › Full Disk Access. Without it, some folders like Mail stay hidden.
- Scan your startup diskOverview shows used, free and how much can be cleared. The scan of a typical home folder takes seconds.
- Open SpaceClick any folder to go inside. Switch views to spot what the list hides.
Eight views of one scan
- Folders: a sorted list with size bars, the fastest way to drill down.
- Sunburst: rings of folders around the one you're in.
- Treemap: every file as a rectangle sized by space.
- Flame graph: deep folder paths in one picture.
- Bubbles and mind map: the same tree, easier to read at a glance.
- Largest items: the biggest files anywhere on the disk.
- Age map: which folders you haven't opened in months.
Then search, without rescanning
The scan doubles as a file index. Find searches every file by name in about 5 milliseconds and stays current as files change, so you can look for .dmg installers or old .zip downloads without waiting.
Questions
How do I see what's taking up space on my Mac?
Use a disk space analyzer. Broom scans your disk and shows folders by size in a list, sunburst or treemap, so you can click straight to the big ones.
Is it safe to give Broom Full Disk Access?
Broom runs entirely on your Mac and never sends anything about your files anywhere. Full Disk Access lets it measure protected folders; it never removes system files.
How long does a scan take?
On an M4 MacBook Air, 1.78 million files took 8.4 seconds. Reopening a saved scan takes about 80 milliseconds.