Open Graph
Open Graph is a set of tags in a web page's code that say what to show when someone shares the link, like a title and a picture. The Open Graph protocol, which Facebook created, turns a page into something a social network can show as a card, and it asks for four tags: og:title, og:type, og:image and og:url.
Source: The Open Graph protocol, checked October 29, 2026
What Open Graph means for your business
og:url is meant to be the page's one permanent address, so it should match the canonical URL, the version you want search engines to treat as the real one. og:site_name, an optional tag, gives the name of the whole site.
That name reaches into Google too. Google's guide to site names says its system looks at og:site_name, along with your page title, headings and other text on your home page, when it picks the name to show for your site in search results. Google adds that WebSite structured data counts most if you want to state a preference.
We'd run your home page and main service pages through a share preview tool, then compare og:site_name and og:url with your structured data and canonical tags. If Google shows your site under a name you don't use, a check of the code search engines and AI tools read would find where it's coming from.
Last reviewed October 29, 2026. All terms
How AI answers it today
On October 29, 2026, Google's AI Overview described the share-preview tags and their Facebook origin, citing ogp.me, Wikipedia, SEO tool blogs and YouTube. ChatGPT gave a similar answer without citing anything. Neither mentioned Google reading og:site_name.
Our run through ChatGPT and Google's AI Overview, October 29, 2026. A sample, not what every buyer sees.
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