metadata · metadata.twitter.missing
No Twitter Card meta tag
X falls back to Open Graph, but declaring twitter:card explicitly gives you control over the preview layout.
Why it matters
X (Twitter) falls back to OG tags, but defining twitter:card explicitly gives you control over the preview layout (summary vs. summary_large_image).
Example fix
<meta name="twitter:card" content="summary_large_image" />
Authoritative reference
https://developer.x.com/en/docs/twitter-for-websites/cards/overview/abouts-cards
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