• Sign In to Mosaic
• Go to Mosaic Dashboard
• Click on the "Add Website" Button
• Enter Your Website URL
• Click "Add Website"
• Copy the ready-to-use OG URL from your dashboard

That is all. Mosaic does not require a verification file, token, or signature. The website is saved as a bookmark in your account, and the hostname becomes available to the shared OG image service.

Use the generated URL in your site's <meta property="og:image" /> tag. Change the encoded page URL for subpages. Mosaic shares each canonical page image across users and refreshes it automatically.