Structured data
Twitter card
twitter:card is declared
What we check
twitter:card is declared
Why it matters
Without it, X/Twitter renders a plain text link.
How to fix it
Add <meta name="twitter:card" content="summary_large_image">.
How it affects your score
This check sits in Structured data, which is worth 5% of the overall score. A critical result costs the full weight of the check; a warning costs half. If we can't measure it on your page, we leave it out of the score entirely.