Open Graph checker: how your link looks when shared

What Open Graph tags do

When someone shares a link on Facebook, LinkedIn, WhatsApp, X or Slack, the app reads the page's Open Graph tags to build the preview: a picture, a title and a short description. Without them, the app guesses, and the preview often shows the wrong picture, a cookie notice as the description, or nothing at all. A good preview is the difference between a link people click and one they scroll past.

The tags that matter

• og:title: the headline of the preview. It can be shorter and punchier than the title tag.
• og:description: one or two sentences on what the reader gets.
• og:image: the picture, as a full address. Use 1200 by 630 pixels; small images show as a thumbnail instead of a large card.
• og:url: the page's main address, so every share counts toward one page.
• twitter:card: set it to summary_large_image for the large picture on X. X reads the Open Graph tags for the rest.

Getting the image right

Keep text and logos away from the edges: some apps crop the image to a square. Use a real photo of your product, place or team rather than a stock image, keep the file under 5 MB, and serve it over https. After changing the image, ask Facebook's Sharing Debugger and LinkedIn's Post Inspector to read the page again, because they keep the old preview for a while.

Sharing tags sit alongside structured data, which describes the business to search engines: check it with the schema markup checker. The AI Website SEO Checker checks sharing previews as part of its score out of 100.