Snippet

A snippet is the excerpt of a page an engine shows in its results, or reuses when building an answer — the text beneath a result's title, and on Google's AI surfaces the page content used as direct input. The engine selects it from your page.

Google's documentation uses the word in exactly that sense, and this page defines it that way: the object the controls act on. It gets its own entry because four separate documented directives, a whole category of publisher anxiety, and most of the zero-click argument all point at the same noun.

Where does a snippet come from?

From your page's own text, chosen by the engine. That single fact explains why "how do I write my snippet" is the wrong question: the excerpt is output, not input. What Google publishes is a way to limit it — its robots meta tag reference defines nosnippet as "Do not show a text snippet or video preview in the search results for this page," and max-snippet:[number] as a cap on how many characters may be used (Google, robots meta tag reference).

Those directives reach a page two ways: in its markup, or in the HTTP response as an X-Robots-Tag header set by infrastructure rather than by the page.

Limits and instructions are different powers. Nothing in the documented control surface says which sentence an engine must lift. The only lever on wording is the wording itself: what the page actually contains, in passages that make sense alone.

What is the difference between a snippet and a meta description?

One is a field you write; the other is what appears. The meta description is markup you author and hand to the engine; the snippet is what the engine renders after deciding what best matches the query. The two are frequently identical and frequently not, and no documented directive forces them to match.

The practical read: treat the meta description as a proposal and the page body as the actual source of every excerpt you might get.

Do snippets exist on AI surfaces?

Yes — under a different name, and governed by the same directives. Google's robots meta tag reference states that nosnippet "will also prevent the content from being used as a direct input for AI Overviews and AI Mode," and that max-snippet "will also limit how much of the content may be used as a direct input" for those surfaces. Its AI-features documentation lists the same controls as the way to limit information shown from your pages (Google, AI features and your website).

Google documents the character limit as applying to "all forms of search results," enumerating web search, Images, Discover, Assistant, AI Overviews, and AI Mode — six surfaces obeying one directive. So the snippet is not a blue-link-era concept that AI made obsolete. It is the unit of reuse across every Google surface at once, which is why a decision about snippets is never a decision about one result type.

How much of the snippet can you control?

The volume, not the content — and only by giving some of it up. Google documents four page-level controls, and each one restricts or removes the excerpt rather than shaping it. The trade every one of them forces, including the fact that no AI-only opt-out exists, is worked through in the only granular AI Overview controls.

For most sites the honest answer is to use none of them and spend the effort on what gets excerpted instead. Across our 3 production builds we run 0 snippet controls [our data] — our pages exist to be quoted, so every directive points the wrong way for us.

Why does the snippet matter if the click never happens?

Because the excerpt is read whether or not the click follows. A result whose snippet answers the question can satisfy the searcher on the results page, which is the entire mechanism behind zero-click search — the excerpt does the work and the visit never happens.

That cuts both ways, and the honest version says so. A snippet that answers in place can cost you a visit you would have had; a page too vague to excerpt cleanly may earn neither the excerpt nor the visit. Which trade applies depends on how your site earns, not on a rule anyone can hand you — and nobody can promise a given passage will be selected in the first place. What Google does document about eligibility for its generated answers is in what a Google AI Overview is, and the passage-level writing discipline that makes text excerptable at all runs through our generative engine optimization guide.