{"id":"icloud.what-is-optimize-mac-storage-in-icloud-drive","url":"/faq/icloud/what-is-optimize-mac-storage-in-icloud-drive","category":{"id":"icloud","title":"iCloud & iCloud Photos"},"subcategory":{"id":"online-only-files","title":"Online-only files and Optimize Mac Storage"},"question":"What does Optimize Mac Storage do in iCloud Drive settings?","alt_questions":["Should I turn on Optimize Mac Storage?","Optimise Mac Storage iCloud Drive explained","icloud optimize mac storage meaning","Does Optimize Mac Storage delete files?","Where is Optimize Mac Storage setting?"],"short_answer":"Optimize Mac Storage lets macOS remove local copies of older iCloud Drive files when space runs low, keeping them in iCloud. Turn it on in System Settings → your name → iCloud → iCloud Drive.","answer_markdown":"**Optimize Mac Storage** lets macOS keep older iCloud Drive files in iCloud only and remove their local copies when your Mac needs space. Files you use often stay downloaded, and anything online-only downloads again when you open it.\n\nTurn it on in **System Settings → your name → iCloud → iCloud Drive** (the exact wording varies slightly between macOS versions).\n\nIt's a good setting if you're tight on space. The difference with Storage Studio's **Optimize Cloud Storage** is timing: macOS decides for itself when to free files, usually as space runs low, whereas Storage Studio frees downloaded iCloud files right away when you ask. You can use both. See [how Storage Studio frees iCloud files](/faq/icloud/how-do-i-make-icloud-drive-files-online-only-with-storage-studio).","answer_html":"

Optimize Mac Storage lets macOS keep older iCloud Drive files in iCloud only and remove their local copies when your Mac needs space. Files you use often stay downloaded, and anything online-only downloads again when you open it.

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Turn it on in System Settings → your name → iCloud → iCloud Drive (the exact wording varies slightly between macOS versions).

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It's a good setting if you're tight on space. The difference with Storage Studio's Optimize Cloud Storage is timing: macOS decides for itself when to free files, usually as space runs low, whereas Storage Studio frees downloaded iCloud files right away when you ask. You can use both. See how Storage Studio frees iCloud files.

","answer_text":"Optimize Mac Storage lets macOS keep older iCloud Drive files in iCloud only and remove their local copies when your Mac needs space. Files you use often stay downloaded, and anything online-only downloads again when you open it.\n\nTurn it on in System Settings → your name → iCloud → iCloud Drive (the exact wording varies slightly between macOS versions).\n\nIt's a good setting if you're tight on space. The difference with Storage Studio's Optimize Cloud Storage is timing: macOS decides for itself when to free files, usually as space runs low, whereas Storage Studio frees downloaded iCloud files right away when you ask. You can use both. See how Storage Studio frees iCloud files.","tags":["optimize mac storage","icloud drive","settings"],"related":[{"id":"icloud.optimize-mac-storage-vs-storage-studio-optimize-cloud-storage","question":"What's the difference between macOS Optimize Mac Storage and Storage Studio freeing cloud files?","url":"/faq/icloud/optimize-mac-storage-vs-storage-studio-optimize-cloud-storage"},{"id":"icloud.why-does-optimize-mac-storage-not-free-space-right-away","question":"Why hasn't Optimize Mac Storage freed any space yet?","url":"/faq/icloud/why-does-optimize-mac-storage-not-free-space-right-away"}],"applies_to":"all","last_reviewed":"2026-10-01","title":"What does Optimize Mac Storage do in iCloud Drive settings? — Storage Studio FAQ","description":"Optimize Mac Storage lets macOS remove local copies of older iCloud Drive files when space runs low, keeping them in iCloud. Turn it on in System Settings → your name → iCloud → iCloud Drive.","crumbs":[{"name":"Home","path":"/"},{"name":"FAQ","path":"/faq/"},{"name":"iCloud & iCloud Photos","path":"/faq/icloud/"},{"name":"What does Optimize Mac Storage do in iCloud Drive settings?","path":"/faq/icloud/what-is-optimize-mac-storage-in-icloud-drive"}],"jsonld":{"@context":"https://schema.org","@type":"FAQPage","url":"https://storagestudio.us/faq/icloud/what-is-optimize-mac-storage-in-icloud-drive","inLanguage":"en","dateModified":"2026-10-01","mainEntity":[{"@type":"Question","name":"What does Optimize Mac Storage do in iCloud Drive settings?","alternateName":["Should I turn on Optimize Mac Storage?","Optimise Mac Storage iCloud Drive explained","icloud optimize mac storage meaning","Does Optimize Mac Storage delete files?","Where is Optimize Mac Storage setting?"],"acceptedAnswer":{"@type":"Answer","text":"Optimize Mac Storage lets macOS keep older iCloud Drive files in iCloud only and remove their local copies when your Mac needs space. Files you use often stay downloaded, and anything online-only downloads again when you open it.\n\nTurn it on in System Settings → your name → iCloud → iCloud Drive (the exact wording varies slightly between macOS versions).\n\nIt's a good setting if you're tight on space. The difference with Storage Studio's Optimize Cloud Storage is timing: macOS decides for itself when to free files, usually as space runs low, whereas Storage Studio frees downloaded iCloud files right away when you ask. You can use both. See how Storage Studio frees iCloud files.","url":"https://storagestudio.us/faq/icloud/what-is-optimize-mac-storage-in-icloud-drive"}}]},"fragment":"
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iCloud & iCloud Photos · Online-only files and Optimize Mac Storage

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What does Optimize Mac Storage do in iCloud Drive settings?

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Short answer: Optimize Mac Storage lets macOS remove local copies of older iCloud Drive files when space runs low, keeping them in iCloud. Turn it on in System Settings → your name → iCloud → iCloud Drive.

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Optimize Mac Storage lets macOS keep older iCloud Drive files in iCloud only and remove their local copies when your Mac needs space. Files you use often stay downloaded, and anything online-only downloads again when you open it.

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Turn it on in System Settings → your name → iCloud → iCloud Drive (the exact wording varies slightly between macOS versions).

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It's a good setting if you're tight on space. The difference with Storage Studio's Optimize Cloud Storage is timing: macOS decides for itself when to free files, usually as space runs low, whereas Storage Studio frees downloaded iCloud files right away when you ask. You can use both. See how Storage Studio frees iCloud files.

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