---
id: mac-storage-basics.what-is-the-difference-between-the-library-folders
url: https://storagestudio.us/faq/mac-storage-basics/what-is-the-difference-between-the-library-folders
category: "Mac storage basics"
subcategory: "Library folders explained"
question: "Why does my Mac have three different Library folders?"
alt_questions:
  - "library vs system library"
  - "~/Library vs /Library"
  - "which library folder can i clean"
  - "user library vs main library"
  - "system library folder mac"
  - "three library folders mac"
short_answer: "Your own Library holds your settings and caches; the top-level Library holds items shared by all users; the System Library belongs to macOS and is protected. Clean the first two, leave the third alone."
tags: ["library", "folders", "macos"]
related: ["https://storagestudio.us/faq/mac-storage-basics/how-do-i-open-the-library-folder-on-a-mac", "https://storagestudio.us/faq/mac-storage-basics/what-is-system-integrity-protection"]
applies_to: "all"
last_reviewed: 2026-10-01
---

# Why does my Mac have three different Library folders?

They serve different scopes:

- **Your Library** (in your home folder, hidden by default) holds your own app settings, caches and data. Most per-user clutter lives here.
- **/Library** (at the top of the disk) holds things shared by every user, such as fonts, printer drivers and plug-ins installed for everyone.
- **/System/Library** belongs to macOS itself and is protected; you can't and shouldn't change it.

When you hunt for space, start with your own Library, then the top-level one, and leave the System one alone. Open yours with the steps in [opening the Library folder](https://storagestudio.us/faq/mac-storage-basics/how-do-i-open-the-library-folder-on-a-mac).