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How to check your Mac and save a clean-up report.
The Mac health check shows, in plain words, whether your Mac has enough free space and memory, and which apps may stop working after macOS 27. A clean-up report saves what a scan found to a file you can share. Both are free, and neither changes anything on your Mac.
Open the Mac health check
- Choose Go › Tools (⌘6) and click the Mac health check card.
- Read the sheet, What matters most on this Mac, from the top down. A green tick means fine; an orange triangle means it needs attention.
- Click Done when you've finished.
You can also open it from Go › System Data (⌘8): click Mac health check. On a Mac with 8 GB of memory or less, or a disk of about 256 GB or less, the Dashboard adds a line saying it needs a little care, with What matters most.
What it checks
- Free space on your startup disk, against what macOS needs for updates and swap: 10% of the disk, but at least 20 GB and no more than 35 GB. If you're below that, it says how much to free and offers Free Up Space.
- Memory: macOS's own memory-pressure reading, the one Activity Monitor's graph shows, with Open Activity Monitor. When memory is tight, quitting apps and browser tabs you aren't using helps most.
- Swap: how much of the disk macOS is using as extra memory. A little is normal; quitting apps you aren't using, or restarting, brings the space back.
- Biggest wins from your last scan: up to three of the largest places to get space back, each 500 MB or more, such as files that could move to an external drive or build folders in your code projects. Review takes you to the right page; nothing is removed from here.
- What breaks after macOS 27? Apps built only for Intel, which run through Rosetta (Apple keeps Rosetta through macOS 27 and then limits it), apps built only as 32-bit, which already can't open, and third-party kernel extensions, an older kind of driver Apple is phasing out. Long lists show the first eight and Show all. On an Intel Mac it says apps don't use Rosetta there.
Some apps can't be checked, such as iPhone and iPad apps, which have no Mac code to read. The sheet says how many, and doesn't judge them.
What it never does
- It doesn't remove, move or change anything. Its buttons only open a page in Pangalin Space Manager or Activity Monitor.
- It doesn't quit apps, change settings or open the apps it checks: the macOS 27 check reads each app's files, and runs nothing.
- It doesn't go online or send anything anywhere.
Save a clean-up report
- After a scan, click Save a report on the Dashboard, beside Share what the scan found, without changing anything. Or choose File › Save Clean-Up Report….
- Choose a name and place, and pick PDF or Markdown from Format.
- Click Save. Finder opens with the report selected.
While Preview only is on, the Dashboard shows that instead of Save a report; use File › Save Clean-Up Report….
What's in the report
- It starts by saying Nothing has been changed, and that every item still needs your review and confirmation.
- When it was made, with which version of Pangalin Space Manager, and the date of the scan it comes from.
- Totals for Safe to clean (caches and files that rebuild themselves), Could move to an external drive and To review yourself.
- A table for each, biggest first, with each item's name, kind and size: up to 100 items, then how many more.
- Items are listed by name, and the report doesn't show your folder names, so it's safe to share. It says so at the end.
Sharing it
Saving the report changes nothing on your Mac, and Pangalin Space Manager doesn't send it anywhere. It's an ordinary file: attach it to an email or message yourself, or print it. A PDF reads the same for whoever opens it; Markdown is plain text.
Need to send us details about a problem instead? Use Save support information.
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Checked against Pangalin Space Manager 3.48.1, 14 October 2026.