What is Open Graph?
Open Graph is Facebook's protocol for controlling how a link looks when it's shared: the title, image and description shown in the preview card. It has nothing to do with schema.org and no bearing on search ranking.
The tags live in the page head like other meta tags, but they answer a different question than SEO markup does: not what is this page about for a search engine, but what card should render when someone pastes this link into a message or a social post. Get them wrong and the page still ranks fine; the link preview just looks broken or generic.
The confusion is understandable, since the tags sit next to the title and meta description in the same head section, and some page builders generate all three from one field. But they are read by different consumers for different purposes, and setting Open Graph tags is not a substitute for the schema.org markup an engine uses to understand what the page is about.
Related
- Structured dataStructured data is machine-readable markup, usually schema.org JSON-LD, that states explicitly what a page and its subject are.
- Meta descriptionA meta description is the short summary in a page's head that search engines often, but not always, use as the snippet shown under the title in results.
- Title tagA title tag is the HTML element declaring a page's name, shown as the clickable link in search results and often used as the label an assistant attaches to a page it cites.
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