Upload files to or 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.
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’re dragging will go into the folder.
Click the File Upload button in the iCloud Drive toolbar, select the files you want to upload and then follow the on-screen instructions.
If you see a message that there isn’t enough free space for the items you’re trying to upload, you can delete iCloud Drive files to save space.
Some apps, like Pages, Numbers and Keynote, have their own folders in iCloud Drive. You can only upload a file into an app’s folder if the app can open the file.
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 and then click the Download button 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).