schema
Snippet control
Meta tags that constrain how engines may snippet your content: max-snippet, max-image-preview, max-video-preview.
Definition
Snippet control meta tags let operators constrain how search/AI engines may snippet content from their pages: <meta name='robots' content='max-snippet:160, max-image-preview:large, max-video-preview:-1'>. Useful for paywalled content (limit teaser snippet length) or for forcing larger image previews. Honored by Google + most major AI engines.
Example
<meta name='robots' content='max-snippet:50'> on a paywalled article limits snippet to 50 chars, preventing engines from leaking the article body in AI Overviews.How to optimize
Default to max-snippet:-1 (no limit) for SEO content. Use max-snippet:0 to block snippeting entirely (sometimes used for sensitive content). Set max-image-preview:large for visual content sites.