How to add a tag to Facebook images?

There are a few ways to add tags to Facebook assets via the API and UI:

Via API

Add tags to assets using Upload APIs explicit call

You can add a tag while fetching a Facebook profile picture using the explicit API:
For example in Rails:

Cloudinary::Uploader.explicit("BillClinton", :type=>"facebook", :tags => "my_tag")

 or

Cloudinary::Uploader.explicit("65646572251", :type=>"facebook", :tags => "my_tag")

Add tags to an asset using Upload APIs add tags call

You can also add a tag to already uploaded Facebook images:

Cloudinary::Uploader.add_tag('another_tag', ['billclinton', 'zuck'], :type => :facebook)

Via UI

Add tags to an individual asset

• Go to the Media Library
• Search for the asset you want to tag
• Double-click on the asset thumbnail and it will take you to the Manage page
• On the right-hand panel, there will be a field named tags -> add tags and click save
  

Add tags to multiple assets at once

• From the Media Library, you can select multiple assets by clicking on the checkmark with the solid circle around it on the top left corner of the thumbnails.
• This should bring into view where the search bar was a menu of actions. One of those actions is to tag the assets