Sharing
Paste any URL and see the title, description, and image each platform will show.
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A link unfurler fetches the page shell and gets the title and status only. The secret is fetched, and the view counted, when the page runs in a browser.
Each platform reads the same Open Graph tags but crops, truncates, and caches them differently. Open the checker for the app you are sharing in.
Messaging apps and chat platforms scrape a URL's HTML head for Open Graph, Twitter Card, and oEmbed metadata, then assemble a preview card client-side.
If those tags are missing, platforms fall back to the <title> and the first usable image they can find — often with poor results.
Every platform reads the same core tags — og:title, og:description, og:image, and og:url — but each renders them differently: Slack and Discord show a full card with description, iMessage shows title and domain over the image, and WhatsApp usually crops the image to a small square thumbnail. Check the platform-specific pages below when a preview looks right in one app and wrong in another.
A preview is what a scraper sees, not what a visitor sees. Fix Open Graph link previews covers the tags each platform reads, the open graph checker is the technical view for developers, with per-platform pages that show the card as Slack, LinkedIn or iMessage would render it, and link scanners and one-time secrets explains why a preview fetch does not burn a secret link. The redirect checker finds the hop that breaks a preview.
How teams put the Link Preview Checker to work.
Verify previews look good before sharing in Slack, iMessage, or WhatsApp.
Confirm article metadata is correct before publishing or syndicating.
Make sure cold emails and DMs render an attractive card every time.