Frequently asked questions

No. DiskJoy only lists what it finds. Items move to the Trash after you confirm the full list, and nothing is permanently deleted until you empty the Trash.

Yes, until you empty the Trash. Open the Trash in Finder and choose Put Back. History in DiskJoy shows which operations still have items in the Trash.

Caches are temporary data that apps rebuild when needed. After removal an app may load a little slower the first time. DiskJoy explains the effect for each item and leaves items where the effect is less clear unselected. Read the guide to ~/Library/Caches.

Size alone doesn’t tell whether a file is still needed. DiskJoy lists large and old files with their age and location so you can decide yourself.

No. Scans run on your Mac and DiskJoy doesn’t need an account.

macOS protects locations such as Mail and Safari data. Without Full Disk Access, DiskJoy skips them and marks them as “Not scanned”. You can use DiskJoy with limited access and turn on Full Disk Access later in System Settings › Privacy & Security.

Files in the Trash still take up space on your disk. The space comes back when you empty the Trash. DiskJoy shows “Moved to Trash” and “Space freed” separately for this reason. Read more.

Yes. Choose Exclude from Scans on any item, or add folders and files in Settings. Excluded items are never scanned, counted or suggested for removal.

No. You can turn on a weekly or monthly reminder, which is a notification only. DiskJoy never scans or removes anything on its own.

Data that apps you already deleted left in your Library folder. DiskJoy marks each item as a Confirmed match when the app identifier matches, or a Possible match when only the name matches. Possible matches are not preselected.

It compares file contents, not names. One copy in each group is always kept, and you choose which one.

DiskJoy lists only data that can be recreated, such as Xcode DerivedData, package caches and node_modules, and never lists source code. Each group says what happens after removal, for example that the next build takes longer.