What is a Twitter/X card image?
X cards are rich link previews that appear when you share a URL. The large summary card displays an 800×418 image (1.91:1 ratio) above the page title and description. They are controlled by Open Graph and Twitter meta tags.
How do I set up a Twitter/X card for my website?
Add meta tags to your page's HTML head: twitter:card, twitter:title, twitter:description, and twitter:image. Set twitter:card to 'summary_large_image' for the 800×418 format. Test with X's card validator tool.
Why isn't my X card image showing?
Common causes: missing or incorrect meta tags, image URL not accessible to X's crawler, image smaller than 144×144, or X hasn't re-crawled your page. Use X's card validator to debug and force a re-crawl.
