ferrlens

· FerrLens · NEW

OG card preview

See how a URL renders as a Twitter card, LinkedIn share and Slack unfurl — side by side, with warnings for missing or oversized fields.

/tools/og-preview takes a URL and shows three side-by-side visual mocks of how it will appear when shared:

  • Twitter / X — summary or summary_large_image depending on twitter:card.
  • LinkedIn — image on top, title + hostname in the grey caption bar.
  • Slack — site name + favicon, blue title, description, then the inline image.

A warnings panel calls out the common mistakes: missing og:image (links look bare), title > 70 chars (Twitter truncates), description > 200 chars, missing twitter:card (Twitter falls back to small image), and the always-painful "you forgot to add OG tags entirely".

Fetches the page server-side, parses meta + link tags, resolves the favicon, and renders everything in your browser — nothing is uploaded.

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