Unfurl - Social Link Preview Checker

See your link before the internet does. Paste a link and it expands into a card with an image, a headline and a line of text. That card is built from hidden tags in your page. When they're wrong, the image is cropped, the headline is chopped mid-word, or nothing shows at all — and you only find out after you've posted, in front of everyone. Unfurl shows you all six previews at once, before you share. WHAT YOU GET - Six real previews side by side — Each one is drawn with that platform's own layout, crop ratio and text limits, so you see why a link can look great on one and broken on another. - Truncation you can actually see. If your headline is too long, the part that gets cut is struck through in red, in place. No guessing which 11 characters disappear on WhatsApp. - The fallback trace. Under every card, the tag each platform actually used — and the ones it skipped. - Image diagnostics. Real width, height, aspect ratio and file size, pulled from the image itself. Flags images that will be cropped, images too small for a large card, and images too heavy for WhatsApp to render. - The mistakes that silently kill previews: a relative image path, an http image on an https page, an og:url pointing at the wrong page, a missing twitter:card. Each one looks fine in your CMS and breaks in the wild. - A corrected block of tags, ready to copy and hand to whoever manages the site. WORKS WHERE OTHER TOOLS CAN'T Every other preview checker sends your URL to a server, so your page has to be published and publicly reachable first. That means you check after you've already shared it. Unfurl reads the page in your own browser. So it works on: – staging and preview deploys – pages behind a login – localhost – drafts that aren't published yet – pages that build themselves with JavaScript Check it while you're still writing, not after. You can also paste any other URL to check a page you're not currently on. WHO IT'S FOR Content and social media managers, newsletter writers, bloggers, SEO and growth teams, agencies shipping client campaigns, and developers who write the meta tags and need to test before deploying. PRIVACY No account. No sign-up. No analytics. Nothing you check is sent to us, because there is no server — everything happens in your browser. Free, with no paid tier. Unfurl is an independent tool and is not affiliated with, endorsed by, or sponsored by any platform. Platform names are used only to describe which services the previews represent.