iCloud User Guide
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Upload and download files from iCloud Drive on iCloud.com
You can upload files from a Mac or Windows computer to iCloud Drive. You can also download files from iCloud Drive that you want to copy to your computer.
Upload files
In iCloud Drive on iCloud.com, do either of the following:
Drag files from the desktop or a folder window on your computer to the iCloud Drive window or a folder icon in the iCloud Drive window.
If you drag to a folder icon, it becomes highlighted to confirm that the item you are dragging will go into the folder.
Click
in the iCloud Drive toolbar, select the files you want to upload, then follow the onscreen instructions.
If you see a message that there is not enough free space for the items you are trying to upload, you can upgrade your iCloud storage or remove stored items to make more space available (see the Apple Support article Manage your iCloud storage).
Some apps, like Pages, Numbers and Keynote, have their own folders in iCloud Drive. You can upload a file into an app’s folder only if the app can open the file.
Download files
Changes you make to a downloaded file appear only on your computer unless you subsequently upload the file to iCloud Drive.
In iCloud Drive on iCloud.com, select the files you want to download, then click
in the iCloud Drive toolbar.
The files are saved in the Downloads folder on your computer (or other folder specified in your web browser’s preference or option settings).