Why does this need me to paste HTML instead of just a URL?

Fetching an arbitrary URL's HTML from a browser is blocked by CORS on most sites. Pasting the page source (View Source, or Ctrl/Cmd+U) keeps this tool fully client-side — nothing is sent to a server.

What tags does it read?

, meta description, and the og:title/og:description/og:image/og:url and twitter:card/twitter:title/twitter:description/twitter:image tags.

Open Graph / Twitter Card Preview

Paste a page's HTML source to preview how its Open Graph and Twitter Card tags render as a social share card.

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Page HTML source (or just the <head>)

Related tools

URL Parser
Aspect Ratio Tester
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How it works

1
View the page source

Ctrl/Cmd+U on the page, or copy its <head> HTML.
2
Paste it into the box

Just the HTML source, no fetch or URL needed.
3
See the extracted tags and preview

Title, description, and how the OG/Twitter card renders.

FAQ

Why does this need me to paste HTML instead of just a URL?: Fetching an arbitrary URL's HTML from a browser is blocked by CORS on most sites. Pasting the page source (View Source, or Ctrl/Cmd+U) keeps this tool fully client-side — nothing is sent to a server.
What tags does it read?: <title>, meta description, and the og:title/og:description/og:image/og:url and twitter:card/twitter:title/twitter:description/twitter:image tags.