If you have ever right-clicked a folder in iCloud Drive, OneDrive, or Dropbox and seen options like "Free Up Space," "Remove Download," or "Make Available Offline," you may have wondered whether clicking any of them will permanently delete your files. Understanding free up space vs remove download is one of the most common sources of confusion for Mac users juggling multiple cloud services — and the stakes feel high because the terminology varies across every app. This guide explains exactly what each option does, how it differs between services, and how to check what is actually stored locally before you act.
The Core Concept: Online-Only vs Locally Downloaded
All three major cloud services — iCloud Drive, OneDrive, and Dropbox — support a mode where a file exists in two states: a full local copy on your Mac's internal storage, or a lightweight placeholder that represents the file without consuming local disk space. The file is always safe in the cloud regardless of which state it is in. The options "Free Up Space" and "Remove Download" are two names for the same underlying action: converting a locally downloaded file back into a cloud-only placeholder.
No data is deleted from the cloud. You are only removing the local copy.
What "Free Up Space" Means in OneDrive
OneDrive on macOS uses a feature called Files On-Demand. When Files On-Demand is active, every file in your OneDrive folder is visible in Finder even if it has not been downloaded. Small cloud icons next to filenames indicate their state:
- A cloud icon with a down-arrow: available online only, not downloaded
- A solid green checkmark: downloaded and available offline
- A hollow green checkmark: always kept on this device
Right-clicking a downloaded file or folder gives you two options that are easy to mix up:
- Free Up Space — removes the local copy and makes the item online-only again. The file remains in OneDrive. You need an internet connection to open it next time.
- Always Keep on This Device — the opposite; forces a persistent local download that survives sync pauses.
The phrase OneDrive free up space vs always keep on this device describes this toggle. "Free Up Space" is safe — it will not delete anything from the cloud — but be aware that if you are offline when you need the file, it will be inaccessible until reconnected.
How to Free Up Space in OneDrive via Terminal
If you want to evict a large folder from local storage without using the Finder menu, you can do so with the brctl-adjacent approach. For OneDrive specifically, the cleanest method remains right-clicking in Finder, but you can verify whether a file is local by checking its extended attributes:
xattr -l ~/Library/CloudStorage/OneDrive-Personal/MyFolderFiles with a com.microsoft.OneDrive.RecallOnOpen attribute are online-only placeholders. Files without it are fully local.
What "Remove Download" Means in iCloud Drive
iCloud Drive on macOS (macOS 12 Monterey through macOS 26) uses a system called Optimise Mac Storage. When enabled in System Settings > Apple ID > iCloud > iCloud Drive, macOS automatically evicts infrequently used files to free local storage. You can also trigger this manually.
Right-clicking a file or folder in iCloud Drive in Finder shows Remove Download. This converts the item to an iCloud-only placeholder. The file is not deleted — it remains in iCloud and will re-download automatically when you next open it.
The remove download iCloud meaning is straightforward: you are asking macOS to stop keeping a local copy. If you have a reliable internet connection, this is a safe way to reclaim tens of gigabytes on a full drive.
To check whether an iCloud item is locally present or a placeholder from Terminal:
brctl download ~/Library/Mobile\ Documents/com~apple~CloudDocs/MyFolderAnd to evict (remove the download) from the command line:
brctl evict ~/Library/Mobile\ Documents/com~apple~CloudDocs/MyFolderThe path ~/Library/Mobile Documents/com~apple~CloudDocs/ is the canonical iCloud Drive location on macOS. Do not confuse it with iCloud synced app containers deeper in ~/Library/Mobile Documents/, which use separate bundle-ID-based paths.
What Dropbox Does Differently
Dropbox calls its equivalent feature Smart Sync. The language in Finder is slightly different again:
- Local — fully downloaded
- Online Only — placeholder, no local data
- Mixed — folder contains a mix of both states
Right-clicking gives you "Make available offline" (download) or "Online only" (evict). There is no "Free Up Space" or "Remove Download" label — which is exactly why this feature confuses people across services.
Dropbox Smart Sync stores placeholders inside ~/Dropbox/ just like normal files. The actual local data for downloaded files also lives under ~/Dropbox/; there is no separate cache directory you can safely bulk-delete.
Side-by-Side Comparison
| Service | Feature name | Evict label | Download label | Placeholder location |
|---|---|---|---|---|
| iCloud Drive | Optimise Mac Storage | Remove Download | Download Now | ~/Library/Mobile Documents/ |
| OneDrive | Files On-Demand | Free Up Space | Always Keep on This Device | ~/Library/CloudStorage/OneDrive-*/ |
| Dropbox | Smart Sync | Online Only | Make Available Offline | ~/Dropbox/ |
When Is It Safe to Evict Files?
In all three cases, evicting a file is safe as long as:
- The file has successfully synced to the cloud (no pending upload icon in Finder)
- You have a reliable internet connection when you need to access it later
- You are not the last copy (e.g., the cloud account has not been cancelled or reached its storage limit)
If you are unsure whether a folder is truly cloud-backed or if it is a local-only folder that happens to live inside your cloud drive root, evicting it is riskier. Some applications write to ~/Dropbox/ or ~/Library/Mobile Documents/ directly, and not all of those files are necessarily synced — especially if they were written while your Mac was offline and the sync queue is backed up.
This is where Crumb's safe-to-delete AI is useful. Before freeing up space in a folder you are uncertain about, you can drop the path into Crumb's "Is this safe to delete?" feature. It reads the folder's metadata, checks whether the contents look cloud-synced or locally critical, and gives you a plain-English explanation of the removal risk — without sending your actual file contents anywhere.
What "Free Up Space" Does Not Do
A common misconception is that "Free Up Space" in OneDrive (or its equivalents) also clears app caches, browser data, or system logs. It does not. It only evicts the local copy of that specific file or folder from the cloud service's sync folder.
If your Mac is still showing a full disk after evicting cloud files, the culprit is likely somewhere else: ~/Library/Caches/, Time Machine local snapshots stored under /.MobileBackups, large downloads in ~/Downloads/, or application support data that accumulates silently over time. Finder's Get Info and the Storage tab in System Settings (About This Mac > More Info on macOS 13+) can show you a rough breakdown by category, though they are not always precise about what is purgeable vs what you need to manually remove.
If you want a more detailed view of where your space is going, download Crumb and use its Visualize tab, which renders a full disk map and surfaces the largest directories and files across your entire Mac — including the paths that macOS's own storage tools tend to obscure.
Summary
"Free Up Space," "Remove Download," and "Online Only" all mean the same thing: remove the local copy, keep the cloud copy. None of them delete your data permanently. The confusion comes from each service using different labels for an identical concept. Before evicting any folder you are unsure about, verify that its contents are fully synced and understand that you will need an internet connection to re-open those files. For anything in an ambiguous path — a folder deep inside your iCloud or OneDrive root that you did not personally put there — checking its risk profile first is worth the thirty seconds it takes.