What is Link preview?
The card a platform renders when you share a URL, built from the page’s Open Graph tags. A broken preview kills click-through.
A link preview is the card a platform builds when you paste a URL: image, title, and description, pulled from the page’s Open Graph and Twitter Card meta tags. The page owner controls those tags; the platform controls how, and whether, it renders them.
Previews fail quietly. A missing image or truncated title does not throw an error; it just turns your link into a gray box that nobody clicks. Checking how a link renders before you publish is one of the cheapest click-through improvements available.
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