How do I get my web page content to render with a full-bleed image and a description when users share it on Google+ using a URL?
When sharing certain types of content, you can customize the snippet to enhance the way your content is rendered in a post. Following these instructions, you can add code to your page that enables Google to render your content with full-bleed images and a description as shown in the "full-bleed" example.
Content that does not qualify for this rendering treatment is rendered as shown in the Thumbnail example.
Google+ attempts to render content with full-bleed images and a description for content types Article, Blog, and BlogPosting, and all types that inherit from these, as defined by microdata.