Your Mac Desktop takes up space in iCloud because of the Desktop & Documents Folders sync feature, which automatically uploads everything you drop on your Desktop (and in Documents) to iCloud Drive. To stop it, disable that feature in iCloud settings, then move the files back to your local Desktop manually.
TL;DR
- The culprit is the Desktop & Documents Folders option in iCloud Drive settings.
- Once enabled, every file on your Desktop is uploaded to iCloud, including huge project files.
- Turning it off does not delete anything; files move into iCloud Drive, not the trash.
- Drag the files from iCloud Drive back to your local Desktop to reclaim cloud space.
- A 50-200 GB iCloud plan fills fast if you keep big files on the Desktop.
What does Desktop & Documents Folders sync actually do?
The Desktop & Documents Folders feature is a macOS option that mirrors your Desktop and Documents folders to iCloud Drive. Enabled once, it quietly ships every file you place on the Desktop, including 10 GB video projects or design archives, to Apple's servers so they are available across your devices. That cross-device convenience is the upside. The downside is that a 50 GB or 200 GB iCloud plan can fill up overnight if you routinely work with large files on the Desktop, because each one is counted against your iCloud quota.
How do I turn off Desktop & Documents sync safely?
Disabling the feature does not delete your files; it just stops the automatic upload. To turn it off:
- Open System Settings
- Click your Apple ID at the top
- Open iCloud › iCloud Drive
- Click Options next to iCloud Drive (on older macOS, this is iCloud Drive › Options)
- Turn off Desktop & Documents Folders
- Confirm the warning; the Desktop will look empty for a moment
The files are not lost. They now live only inside iCloud Drive until you move them back locally.
How do I get my Desktop files back locally?
After disabling sync, your files sit in iCloud Drive. Move them onto your real, local Desktop:
- Open Finder
- In the sidebar, under iCloud, click iCloud Drive
- Open the Desktop folder
- Select everything and drag the files out of iCloud Drive and onto your local Desktop
- Repeat for the Documents folder
Once the files are on the local drive and removed from iCloud Drive, that iCloud space frees up.
Sync on vs sync off: which should you choose?
The right setting depends on the size of your files and your iCloud plan.
| Sync on (Desktop & Documents in iCloud) | Sync off (local Desktop) | |
|---|---|---|
| Access across devices | Yes, everywhere you sign in | Local Mac only |
| iCloud space used | High, every Desktop file counts | None from the Desktop |
| Best for | Small docs, working across Macs | Large projects, video, design files |
| Risk of filling iCloud | High on a 50-200 GB plan | None |
Is it safe to turn off Desktop & Documents sync?
Yes, turning the feature off is safe and nothing is deleted. When you disable it, macOS keeps your files inside iCloud Drive rather than erasing them, and you simply drag them back to the local Desktop afterward. The one thing to watch is timing: make sure files have finished downloading from iCloud (no cloud-with-arrow icon) before you rely on them locally, so you are moving full copies rather than placeholders. As long as you wait for downloads to complete, the change is fully reversible and risk-free.
When iCloud is still full after this
If iCloud remains full after reclaiming your Desktop, the next likely culprit is your Photos library or accumulated system files. Cleanor's camera-roll cleanup finds duplicate and similar photos locally, so you can trim the library that is syncing to iCloud without uploading anything new for review.
FAQ
Why does my Mac Desktop use iCloud storage at all?
Because the Desktop & Documents Folders feature in iCloud Drive uploads everything on your Desktop and Documents to iCloud, every file there counts against your iCloud quota.
Will turning off Desktop & Documents sync delete my files?
No. Disabling the feature moves your files into iCloud Drive rather than deleting them; you then drag them back to your local Desktop to free up the cloud space.
How do I move my files back to the local Desktop?
Open Finder, go to iCloud Drive in the sidebar, open the Desktop folder, and drag the files out onto your real local Desktop, then repeat for Documents.
Should I keep Desktop & Documents sync on?
Keep it on only if your Desktop files are small and you want them across devices. If you work with large project or video files, turn it off to avoid filling a 50-200 GB iCloud plan.
Next steps
For the bigger picture on Mac disk space, read mysterious System Data on Mac and how to safely clean the disk, and to understand cloud-vs-local syncing, see the truth about Optimize iPhone Storage and Google Photos. If your synced library is full of duplicate photos, follow how to delete photos from your phone but keep them in the cloud and how Cleanor finds duplicate and similar photos. For the full approach, visit our clean up camera roll hub. To trim the photo library that syncs to iCloud, Cleanor for iOS finds duplicates and similar shots locally, with nothing uploaded.