See exactly how a page looks when it's shared on Facebook, LinkedIn and X. The checker reads the page's Open Graph and Twitter Card tags, checks the image size, and gives you a fixed tag set to copy.
Paste into the page's <head>, replacing any existing Open Graph and Twitter tags. Edit the placeholders in capitals first.
After fixing tags, refresh the cached preview with Facebook's Sharing Debugger and LinkedIn's Post Inspector. Both platforms cache link previews for days.
They're meta tags in a page's head that tell Facebook, LinkedIn and most other apps which title, description and image to show when the page is shared. Without them, platforms guess, and the result often looks broken.
Use 1200×630 pixels, a 1.91:1 ratio. It displays sharply on Facebook, LinkedIn and X's large card. Keep important text away from the edges, because some apps crop slightly.
X reads Open Graph tags as a fallback, but it needs twitter:card set to summary_large_image to show the big image preview. Adding the full set gives you control on every platform.
Platforms cache previews. Run the page through Facebook's Sharing Debugger and LinkedIn's Post Inspector to make them fetch the new version.
They follow each platform's current layout and text limits closely, but platforms change their designs often, so treat them as a close guide rather than a pixel-perfect copy.
