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Open Graph Checker
Check the Open Graph and Twitter card tags that control how a page looks when shared on LinkedIn, Slack, X, and Facebook, and get fixed tags.
Public information only. Do not enter passwords, private URLs, or confidential data.
What this open graph checker checks and how to act on it
An Open Graph checker reads the meta tags that control how a page looks when shared on LinkedIn, Slack, X, Facebook, and messaging apps: og:title, og:description, og:image, og:url, og:type, and twitter:card. This tool reads them from the server HTML, which is what most preview crawlers see.
The most common problem is tags added by JavaScript after load, which preview crawlers never run. Others are relative image URLs, missing images, and og:url values that disagree with the canonical. Use an absolute HTTPS image around 1200 by 630 pixels, and refresh cached previews with each platform's debugging tool after fixing tags.
How to use the open graph checker
- Enter a public page URL.
- The tool reads Open Graph and Twitter card tags from the server HTML.
- Fix missing images, relative URLs, and mismatched og:url, then refresh previews in LinkedIn Post Inspector or the Facebook Sharing Debugger.
What it does not check
- Tags added by JavaScript after load, which most preview crawlers never see.
- Whether the image file loads or meets each platform's size rules.
Read the guide
Step-by-step explanations of what this tool checks and how to fix what it finds.