twittercard
Twitter Card is a metadata protocol used by Twitter to attach rich media and contextual information to tweets that link to a webpage. By including Twitter-specific meta tags in a page’s HTML, publishers can control how the linked content appears in timelines, potentially increasing engagement and click-through rates.
Card types include several formats. Summary Card shows a title, description, and a small thumbnail. Summary
Implementation works by adding Twitter-specific meta tags in the page header. The essential tag is twitter:card,
Validation and deployment: pages should be accessible to Twitter’s crawler and served over HTTPS. Publishers can
History and scope: Twitter Cards were introduced to enable richer link previews on Twitter. Over time, Twitter