Can photos be edited in iCloud?

Once you set up iCloud photos in Mac Set up and use iCloud Photos - Apple Support

You can only edit photos from photo application of MacEditing basics in Photos on Mac - Apple Support

The same photos will be mirrored in www.icloud.com , however there is no option of editing photos from iCloud.com

B Rene wrote: How do I edit my photos in iCloud?

"in iCloud" is confusing. At iCloud.com there is iCloud Photos, iCloud Drive, iCloud Mail, iCloud Notes, and other iCloud stuff. Do you mean in your iCloud Drive folder? If that's what you mean, then the iCloud Drive folder is like any other folder on a Mac-- you can drag an image file from there to the Preview app, for instance, and it can be edited there. When it's saved, the edited version will be saved to the iCloud Drive Folder and copied to iCloud Drive at iCloud.com. iCloud Drive folder is just a folder on you Mac, like any other folder, except that everything in it is copied to iCloud.com.

If you mean can you edit a picture you see in iCloud Photos at iCloud.com in a browser like Safari, then, as FoxFifth said, you would have to download the picture in order to edit it. But if you're on a Mac that's connected to that account, then any picture at your connected iCloud Photos can be edited with Photos on the Mac-- no browser or downloading needed.

There isn't an option to edit them at iCloud.com. Edit them on a device that is syncing iCloud Photos and that will sync with iCloud.com.