Twitter Card Generator (Summary Card)

Twitter Card Generator writes the twitter: meta tags for a summary, large-image, app or player card, with handles for the publishing site and the author.

The card type is checked against the four values X accepts, so a typo halts the run instead of producing a card that silently falls back to something else. Handles are normalised to carry the @ whether you typed it or not, and the title and description are checked against X's display cut-offs of roughly 70 and 200 characters, with the real count reported either way. The point worth knowing before adding these: X falls back to your og: tags for anything the twitter: tags do not declare, so these only need to cover what differs from Open Graph.

Tag text is assembled in your browser and no preview is fetched, so nothing is posted to X and no draft wording leaves the page.

Giving a page a different headline on X than on Facebook, switching a link from a small thumbnail to a large image card, adding creator attribution to shared articles, and checking a title against the limit before it is cut.

Also known as: x card previewer · summary large image tag · twitter meta tags · preview links