Using Web-Folder
In particular, you can use a Web-Folder (WebDAV-based).
Using Dropbox
The public-folder in a Dropbox account can also be used. However, there is in this case a delay from the moment the files are put to the local folder and the moment at which the actually become accessible on the web (synchronization takes some time). Thus, you need to activate the option sync delay if you are using Dropbox.