---
id: mac-storage-basics.does-a-mac-delete-files-automatically-when-space-is-low
url: https://storagestudio.us/faq/mac-storage-basics/does-a-mac-delete-files-automatically-when-space-is-low
category: "Mac storage basics"
subcategory: "Purgeable space and local snapshots"
question: "Will my Mac delete my files automatically when storage runs low?"
alt_questions:
  - "mac deleting files on its own"
  - "does macos remove files when full"
  - "why did files disappear low storage mac"
  - "automatic cleanup macos"
short_answer: "Not your documents. It frees purgeable items — snapshots, caches and local copies of iCloud files that stay in the cloud — which then download again when opened."
tags: ["purgeable", "icloud", "automatic"]
related: ["https://storagestudio.us/faq/mac-storage-basics/what-is-purgeable-space-on-a-mac", "https://storagestudio.us/faq/mac-storage-basics/how-do-i-make-the-trash-empty-itself-automatically"]
applies_to: "all"
last_reviewed: 2026-10-01
---

# Will my Mac delete my files automatically when storage runs low?

It won't delete your own documents. When space runs low, macOS removes things it has marked as **purgeable**: local snapshots, caches, and downloaded copies of iCloud files that remain in the cloud (if you use Optimise Mac Storage). Those cloud files then show as online-only and download again when opened.

If files seem to have vanished, check whether they're in iCloud Drive (online-only) or Photos with optimised storage. Anything in the Trash is only removed automatically if you turned that setting on.