Open Graph checker.

How the open graph checker works

The tool collects every <meta property="og:..."> tag (and the article:, book:, profile:, music: and video: families) and checks them against the Open Graph protocol at ogp.me. It does not fetch the image or any URL.

Worked example

Click Load example. It sets og:type to product (not a type on ogp.me), uses a relative og:image with no og:image:alt, and writes the URL as name="og:url" instead of property, so og:url counts as missing. Result: one fix for og:url and reviews for the type, image URL, alt text and attribute name.

What is checked

• The four required properties: og:title, og:type, og:image, og:url.
• og:type is one of the protocol's types (website, article, book, profile, music.*, video.*) or a prefixed custom type.
• og:image is an absolute http(s) URL; width and height are whole numbers; og:image:secure_url is https. The spec calls og:image:alt required with an image.
• og:url is absolute, has no fragment and matches rel=canonical.
• og:locale looks like en_US; og:determiner is a valid value.
• No repeated tags unless the property is repeatable (images, videos, audio, alternate locales, article tags).

The protocol does not explicitly require absolute URLs for every property; its examples use full URLs, so the absolute-URL checks here are a conservative rule of this tool. Platforms add their own rules, such as Twitter/X card tags, so use the Social Preview Checker for those.

Sources

• The Open Graph protocol

Sources reviewed October 2026.