Preview how your link appears on X — large image or summary card — and see which tags are missing.
Free — no credit card. Sign in with Google (free) to keep checking and save your results; Lifetime unlocks the full lists.
X (Twitter) builds link cards from twitter: meta tags, falling back to Open Graph tags when they're missing. Since X retired its own card validator, the easiest way to check a card is to preview it before you post.
Nuqti reads the twitter:card type, title, description and image (with OG fallbacks), checks the image loads and fits the card, and renders the card the way X shows it.
summary shows a small square thumbnail; summary_large_image shows a wide image above the title — usually more clicks.
Only twitter:card is really needed; X falls back to og:title, og:description and og:image for the rest.
1200×628 for large cards (2:1 ratio shown), at least 144×144 for summary cards. Under 5 MB.
The image may be blocked by robots.txt for Twitterbot, too big, or the page returns an error to the X crawler.
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