Open Graph Checker

Enter a URL to see the Open Graph and Twitter Card tags a page publishes, and what a shared link will therefore look like on Facebook, LinkedIn, X, WhatsApp, Slack and everywhere else that renders link previews.

Missing tags are the reason shared links so often appear as a bare URL with no image — and because you rarely see your own links as others do, it usually goes unnoticed for a long time.

How it works

When a link is pasted into a social network or chat app, that platform fetches the page and looks for Open Graph tags — meta elements with a property attribute beginning og:. From those it builds the preview card. If they are absent it guesses from page content, and the result is usually poor or empty.

Four tags do nearly all the work:

• og:title — the card headline. Can differ from the page title, and often should: search wants keywords, a social card wants a hook.
• og:description — a sentence or two beneath it.
• og:image — the single most important one. A card with an image occupies far more space in a feed and is dramatically more clickable. Use an absolute URL; relative paths fail on most platforms.
• og:url — the canonical URL for the content, so shares of parameterised variants consolidate.

Recommended image size is 1200 × 630 (1.91:1). Smaller than 600 × 315 and platforms fall back to a small thumbnail. Keep it under about 5 MB, and remember many platforms will not fetch an image behind authentication or a bot-blocking rule.

Twitter Card tags (twitter:) are largely redundant now — X falls back to Open Graph for title, description and image. The one worth setting is twitter:card, choosing between a small thumbnail and the large summary_large_image layout.

A practical note: platforms cache aggressively. After fixing tags, a previously shared link may keep showing the old preview for days. Facebook's Sharing Debugger and LinkedIn's Post Inspector both let you force a refresh.

Frequently asked questions