Link unfurl

Unfurling is what Slack, iMessage, Discord and X do when they expand a pasted link into a card with a title, description and image. Each platform fetches your page, reads its meta tags, and often caches the result — which is why a fixed preview can keep showing the old version until you force a re-scrape.

A broken unfurl almost always traces back to missing or client-rendered Open Graph tags, or a cached preview that predates your fix.