Learn Open Graph tags: the four essential properties, og:type and article extras, how to choose and size a share image, absolute URLs, fallbacks, caching, and why scrapers need tags in the server HTML. Includes an Open Graph builder with a share-card preview, an image crop lab, and a live Open Graph checker.
Learn Twitter Card tags, used by X for link previews: the card types, twitter:card, title, description, image, alt text and handles, how they fall back to Open Graph, image sizes, caching, and why robots.txt must allow the crawler. Includes a card builder with previews, a fallback lab that shows which tag wins, and a live Twitter Card checker.