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OG Tag Validator

Validate Open Graph and Twitter Card tags and preview how a link looks on Facebook, LinkedIn and X. Free, with no sign-up.

How It Works

1

Enter a URL

Paste any public URL. The tool fetches the page and extracts all Open Graph and Twitter Card meta tags.

2

Review validation results

See which required tags are present or missing, with errors and warnings ranked by importance.

3

Preview social cards

Switch between Facebook/LinkedIn and Twitter/X previews to see exactly how your link will appear when shared.

FAQ

Open Graph tags (og:title, og:description, og:image, og:url, og:type, og:site_name, og:locale), Twitter Card tags (twitter:card, twitter:title, twitter:description, twitter:image, twitter:site, twitter:creator), plus page title, meta description, canonical URL, and favicon.
Social platforms cache OG data aggressively. This tool fetches fresh HTML every time, so you see the current state. Platforms may show an older cached version until their cache expires or you manually purge it.
No. The tool fetches the URL from the server, so it can only access publicly available pages — same as how social platform crawlers work.
Open Graph (og:) tags are the universal standard used by Facebook, LinkedIn, Slack, and others. Twitter Card (twitter:) tags are Twitter/X-specific — if missing, Twitter falls back to og: tags. Having both gives you the most control.
Common causes: the image URL is relative (must be absolute), the image is behind authentication, or the image dimensions are too small. Facebook recommends 1200x630px. Check that the URL works when opened directly in a browser. Need to check your domain's DNS setup too? Use the DNS Lookup tool.

Built & Maintained by Varstatt

Varstatt is a one-person product studio run by Jurij Tokarski, product engineer since 2011. These tools are free and open — no signup, no catch.