iCloud & iCloud Photos · iCloud on the web, Windows and other apps
Can I get to my iCloud Drive files from a web browser?
Short answer: Yes — sign in at iCloud.com and open Drive to browse, download and upload from any browser. With Advanced Data Protection on, web access is off until you allow it from a trusted device.
Yes. Sign in at iCloud.com and open Drive to browse, download and upload files from any browser. It's handy on a computer that isn't yours, or to recover recently deleted files.
If you've turned on Advanced Data Protection, web access is off by default and you have to allow it on a trusted device first. Files you change on the website sync back to your Mac as usual.