GrandPerspective for Mac
See your whole disk as a treemap and spot the files that eat your storage.
by Erwin Bonsma
Free download · macOS · Updated
- 2.4K Ratings
- 4.4
- Price
- Free 100% free
- Category Cleaning
- Developer Erwin Bonsma
- License
- OSS Open Source
- Platform macOS
What GrandPerspective Does
Treemap view
Every file is a rectangle sized by how much space it uses — huge files stand out instantly.
Scan any folder or drive
Analyze your startup disk, an external drive or just a single folder.
Zoom into folders
Click into any area to explore a folder in detail, then zoom back out.
Color by type or folder
Color rectangles by file type, folder or other attributes to understand what you see.
Filters
Hide or highlight specific file types to focus on what matters.
Delete from the view
Reveal or remove files right from the map when you find something you don’t need.
About GrandPerspective for Mac
GrandPerspective is a small, free and open-source disk usage analyzer for Mac by Erwin Bonsma. Instead of long lists, it draws your drive as a treemap: each file is a rectangle whose size matches the space it takes, grouped by folder.
This makes it extremely easy to see where your storage went. Forgotten video exports, old disk images, virtual machines and caches show up as big blocks you can click to identify and remove.
GrandPerspective is a perfect companion to an uninstaller: the uninstaller cleans up apps, while GrandPerspective shows you which documents and media take the most space.
User Reviews
Leave a commentAverage score from people who use GrandPerspective on their Mac. Tap the stars below to add yours.
What we like about GrandPerspective
Big files can’t hide
Editors’ note
The treemap makes the largest files obvious at a glance.
Simple and light
Editors’ note
No accounts, no background processes — just scan and see.
Great with an uninstaller
Editors’ note
Use it for documents and media, and an uninstaller for apps.
How to Find Large Files with GrandPerspective
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1
Start a scan
Open GrandPerspective and choose the drive or folder you want to analyze.
-
2
Read the map
Bigger rectangles mean bigger files. Hover to see each file’s name and size.
-
3
Investigate
Zoom into folders and use colors or filters to understand what takes space.
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4
Clean up
Reveal large files in Finder or delete them directly, then rescan to see the result.
How to Download & Install GrandPerspective on Mac
- Download — tap Free Download to get the GrandPerspective installer.
- Open — double-click the downloaded ZIP or DMG in your Downloads folder.
- Install — drag GrandPerspective into the Applications folder.
- Launch — if macOS warns you on first launch, go to System Settings → Privacy & Security → Open Anyway.
Is GrandPerspective Safe?
Yes — GrandPerspective is a safe app for Mac. It is open source and only reads your disk to draw the map; files are deleted only when you explicitly choose to remove them.
We never repack or modify installers. You can verify this page and its download yourself with independent security scanners:
- Open-source and free
- Read-only scanning by default
- Deletes nothing without your action
Information
- Developer
- Erwin Bonsma
- Category
- Cleaning & Maintenance
- Price
- Free
- License
- Open Source
- Compatibility
- macOS
- User rating
- 4.4 out of 5 (2.4K ratings)
GrandPerspective FAQ
Yes. The download from the project page is free and open source.
Yes, but only when you choose to. Scanning itself does not change anything on your disk.
A treemap shows files as rectangles sized by how much space they use, nested inside their folders.
Yes. It is open source and read-only unless you delete something. See the safety check above for scanner reports.
