Free SEO Tool · by overrank
Free Open Graph Preview & Social Share Checker
When someone shares your URL on X, Facebook, LinkedIn, or Slack, the preview that shows up either pulls eyeballs in or looks like a broken Wikipedia link. This tool fetches your URL, reads the Open Graph and Twitter Card tags, and shows you exactly how each platform will render it.
Paste a URL. We render the preview for all 4 major platforms, list every missing or misconfigured tag, and explain what to fix. Free, no signup, no quotas.
✦ This is 1 of 30+ things overrank automates
overrank generates og:image, og:title, and og:description for every article we publish.
So every page on your site looks great in shared previews, automatically.
No credit card · takes 60 seconds
Frequently asked questions
What are Open Graph tags?
Open Graph (og:) tags are meta tags in your page's head that tell social platforms how to render your URL when someone shares it. Without them, Facebook, LinkedIn, and Slack guess (usually badly). The three critical ones are og:title, og:description, and og:image.
What is the difference between og: and twitter: tags?
X (Twitter) uses its own twitter:* meta tags, but falls back to og:* if twitter:* is missing. So you can usually get away with just og:* tags. The exception is twitter:card — set it to 'summary_large_image' to get the big image preview on X.
What size should og:image be?
1200×630 pixels is the safe sweet spot. Facebook, LinkedIn, and X all accept it cleanly. Stay under 5MB. PNG or JPG. Keep the most important content in the center 1200×627 area so platforms that crop slightly do not chop your text off.
Why does my preview not update after I changed the tags?
Facebook and LinkedIn aggressively cache previews. Force a refresh: Facebook has a Sharing Debugger (developers.facebook.com/tools/debug) and LinkedIn has a Post Inspector (linkedin.com/post-inspector). Hit Refresh on those after updating your tags.
Does this tool save my URLs?
No. The tool fetches your URL server-side once, parses the head, returns the preview, and forgets. Nothing is logged or stored.