SEO.to / 04
Meta tag and social preview checker
Put in a URL. The tool lists every meta, Open Graph and Twitter tag on the page, shows you the link preview other people see when they share it, and tells you which tags are missing.
Fetched live, exactly as a crawler receives it.
Which tags matter
When someone shares a link, the platform reads a few tags and builds a card from them. The ones that matter are og:title, og:description, og:image, og:url, twitter:card, and <title> as a fallback. If the image tag is missing the link shares as plain text and gets fewer clicks.
Image requirements
og:imageshould be 1200×630 for the large card format. Anything under 200×200 is rejected by most platforms.- Use an absolute URL. Relative image paths fail on every major platform.
twitter:cardset tosummary_large_imageunlocks the full-width render on X.