<https://74.208.128.53/#/schema/person/image/>
<http://schema.org/contentUrl>
<https://secure.gravatar.com/avatar/7428f060f552fba8d848f265505869cd?s=96&d=mm&r=g>
<https://opfocus.com/blog/use-a-custom-button-to-pre-populate-opportunity-fields/>