Open Graph is a protocol of meta tags in a page's <head> that controls how a link is displayed as a preview when shared on social networks and messengers.Open glossary entry → (OG) tags are <meta> declarations in a page's head that control the link preview when a URL is shared on social networks or messengers. They define things such as the title, description and preview image.

Typical Open Graph tags are:

  • og:title for the preview title,
  • og:description for the short description,
  • og:image for the preview image,
  • og:url and og:type for URL and content type.

Open Graph is not a direct ranking or search factor, but it shapes how attractive shared links look and therefore indirectly affects clicks and reach. If the tags are missing, platforms fall back on other signals such as the The title tag is an HTML element in the page <head> that defines the page title. It appears in the browser tab and can be used as the clickable title in search results.Open glossary entry → or The meta description is an HTML element in the page <head> that briefly summarises the page's content. Google can display it as the description in the search result.Open glossary entry →, which can lead to uncontrolled previews. OG values should match the visible content and the title and meta description.