Free Open Graph Checker

Open Graph tags decide what happens when someone pastes your link into Slack, LinkedIn, Facebook, iMessage or X. Get them right and you get a card with an image, a headline and a description. Get them wrong and you get a bare blue URL that nobody clicks.

Paste a URL and we fetch the page server-side, read every og: and twitter: meta tag in the head, and render the card each platform will build from them. You see the result before you share it, not after.

It follows the same fallback chain crawlers do

Crawlers do not read og:title in isolation. If it is missing they fall back to twitter:title, then to the page's <title>. Most checkers report "og:title missing" as a failure even when the page renders perfectly. We report what a crawler will actually use and where it came from, then flag only the things that genuinely break the card. A missing tag with a working fallback is a suggestion, not an error.

The mistakes that actually break previews

• A relative image path. og:image="/hero.png" looks fine in your template and resolves to nothing for a crawler. This is the single most common cause of a missing preview image.
• An http image on an https page. Most platforms drop insecure images silently.
• No twitter:card. X defaults to the small card, so your 1200x630 image renders as a thumbnail.
• A title written for Google. A 60-character SEO title with a brand suffix reads badly in a social card. og:title exists so you can write a different one.

Why the preview may not match a live share

Platforms cache aggressively. Facebook, LinkedIn and X all keep a copy of your tags from the first time anyone shared the URL, sometimes for weeks. If you have just fixed your tags, this tool will show the new card while a real share still shows the old one — use the platform's own debugger to force a refetch once you are happy with what you see here.