Disable album downloads
You can change your settings in Picasa Web Albums to prevent visitors from downloading files of your photos. But keep in mind that people can still save the image by right-clicking on the photo or taking a screenshot.
To change your download settings:
- Sign in to your account at http://picasaweb.google.com.
- Click the gear icon in the top-right corner and choose Photos settings.
- Click on the Privacy and Permissions tab.
- In the 'Allow any visitor to:' section, uncheck the box labeled 'Download my photos.'
- Click Save changes.
If you are a Google+ user, changes to this setting will also apply to your albums in Google+.