Open Graph Checker

How to Use

• Choose a source. Use live URL mode when you want to test what a crawler can fetch from a public page right now, or switch to pasted HTML mode when you are validating markup before launch.
• Enter the URL or HTML. Paste the exact URL you expect users to share, or paste the page HTML with the head section intact so the checker can read Open Graph, Twitter, and canonical tags.
• Run the checker. Review the preview card, missing-field warnings, duplicate-tag findings, redirect notes, and field comparison table after the scan completes.
• Fix the final source before sharing. Update the page so the server-rendered response exposes one clear set of tags, then recheck before posting the link in campaigns, social posts, newsletters, or internal chat tools.

What the Checker Reviews

Common Mistakes and Interpretation Tips

A page can look correct in a browser and still produce a weak social preview if the metadata is duplicated, injected late with JavaScript, or attached to the wrong canonical URL. One frequent mistake is publishing og:url for a non-canonical or parameterized version of the page, then sharing a different URL in campaigns or newsletters. Another is relying on relative image paths that work inside a browser but create ambiguity for crawlers. Duplicate og:title or og:description tags are also risky, because platforms may choose the first value, the last value, or a cached older value depending on how they fetch the page.

If the checker reports a redirect, compare the requested URL, final fetched URL, canonical link, and og:url together. Those four values should usually describe the same preferred page. If they do not, fix the page before a promotion or product launch so social shares, analytics, and indexing signals all point to one stable URL.

Use Cases

This tool is practical for editorial teams checking article shares before publication, ecommerce teams validating product cards before a campaign, and developers reviewing SSR output after a framework migration. It is also useful when debugging why Slack, Discord, LinkedIn, or Facebook is showing an outdated thumbnail, a homepage title, or a generic fallback image. In those situations, the problem is often not the platform itself but the metadata exposed by the page source it fetched.

Because many AI answer surfaces and preview systems reuse page metadata, controlled Open Graph tags can also improve how links are summarized or cited outside traditional social media. The tags are not a ranking factor by themselves, but they are part of the page-quality packaging that affects click-through and share confidence.