OG Image Previewer

Open Graph (OG) is a protocol created by Facebook that controls how URLs appear when shared on social media, messaging apps, and collaboration tools. When someone shares a link on Twitter, LinkedIn, Slack, or Discord, those platforms scrape the page's <meta> tags to build a rich preview card with a title, description, and image.

The four essential OG tags are og:title, og:description, og:image, and og:url. The image is by far the most impactful — posts with images get 2-3× more engagement than text-only links. The recommended image size is 1200×630 pixels for a full-width card, or 600×600 for square thumbnails.

Twitter/X also supports its own twitter:card tags which override OG for Twitter-specific displays. Setting twitter:card to summary_large_image gives you the full-width image card instead of a small thumbnail. This tool lets you preview exactly how your page will appear on each platform before you publish — so you can optimize the title, description, and image for maximum click-through.