Open Graph
A protocol that controls how a URL appears when shared on social.
Open Graph is a Facebook-originated protocol — now adopted by every major social platform — that lets a webpage control how it renders when shared. Implemented via meta tags in the page head: `og:title`, `og:description`, `og:image`, `og:url`.
Without proper Open Graph tags, social platforms guess. Sometimes they get it right; usually they pick the wrong image (the first image on the page, often a header logo) and use the page title verbatim. Manual OG tags are a 15-minute fix with outsized payoff.
Twitter has its own (now X) variant: `twitter:card`, `twitter:title`, `twitter:image`. Most modern setups define both. The Open Graph tags work as fallback on Twitter when the twitter:* tags are missing.
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