You’ve noticed that Google can pull your page into AI answers, and you want a say in how much of it appears. This guide is for site owners, marketers and publishers who can edit page code or open Google Search Console. By the end you’ll know which control to use for Google AI Overviews nosnippet rules, which one switches the features off for a whole site, and which one is too blunt for the job.
Use nosnippet or max-snippet to limit how much of a page Google can show, use the Search generative AI control setting in Search Console to opt a whole site out of AI Overviews, AI Mode and Discover AI features, and use noindex only if you want the page gone from Search altogether[1][2][4].
Everything below comes from Google’s own documentation. Where those pages go quiet, we say so rather than guess. If you’d rather appear in AI answers than limit them, read our guide to showing up in Google AI Mode at https://oxfordimpulse.com/how-to-show-up-in-google-ai-mode/ .
Step 1: Understand what makes a page eligible
Start with the baseline, because it tells you what you’re actually controlling. Google says AI Overviews and AI Mode don’t need any special optimisation. A page has to be indexed and eligible to be shown with a snippet, and even then nothing is guaranteed[3].
That gives you two levers in plain terms. If a page can’t be indexed or can’t show a snippet, it can’t be used the way an eligible page can. And your site also has to be included in Search generative AI features in Search Console to be eligible for display[3]. You’ll find that setting in Step 3.
Tip
Before changing anything, decide whether you want to limit the amount shown, switch AI features off for the site, or remove the page from Search. Those are three different jobs with three different controls.
Step 2: Use Google AI Overviews nosnippet and max-snippet rules
These are page-level controls. You add them as a robots meta tag in the page’s head section, or as an HTTP header, and they apply to that page only[1].
nosnippet
The nosnippet rule blocks text snippets and video previews in web search, Images and Discover. It also covers AI Overviews and AI Mode, and it stops Google using the page as direct input for those features[1]. A static thumbnail may still remain[1].
To add it, put this in the head of the page:
<meta name=”robots” content=”nosnippet”>
max-snippet:[number]
This one caps the snippet length in characters. The number you choose is the limit[1]. Two values have special meaning:
- 0 is the same as nosnippet.
- -1 lets Google choose the length.
Like nosnippet, max-snippet also limits direct input to AI features[1]. So a value of 150 would be written as <meta name=”robots” content=”max-snippet:150″>.
Watch out
These rules aren’t applied where you’ve separately granted Google permission, for example through a licence[1]. If you have such an agreement, the meta tag won’t override it.
data-nosnippet
Sometimes you want to hide one paragraph, not the whole page. Add the data-nosnippet attribute to a span, div or section element, and that block is excluded from snippets[1]. Three details matter:
- Don’t add or remove the attribute with JavaScript[1].
- Structured data inside the marked section stays usable[1].
- The Google page for this attribute doesn’t mention AI features, so treat its effect there as undocumented[1].
When rules conflict
If two rules on a page disagree, the more restrictive one wins[1]. There’s one trap. If robots.txt blocks a page, Google can’t crawl it, so it never sees the meta rules on it[1][4]. A page that needs a nosnippet rule must stay crawlable.
Tip
Use nosnippet or max-snippet:0 for pages you want shown as little as possible, and a number such as max-snippet:150 when you still want a short preview. Check the tag in your live page source afterwards, not just in your CMS.
Step 3: Use the Search generative AI control in Search Console
Page tags work one URL at a time. If you want a site-wide decision, Search Console has a setting for it[2].
- Open Google Search Console and choose your property.
- Go to Settings.
- Find Search generative AI control.
- Pick one of the three options: Include (the default), Exclude or Inherit from parent.
- Save, then check back after a day or two.
The setting covers AI Overviews, AI Mode and Discover AI features[2].
What Exclude does
Choose Exclude and you get no traffic or impressions from those features[2]. Google says the change usually takes 1 to 2 days and a few days at most. It reached all sites on 31 August 2026[2]. Google also says the setting does not affect AI training[2].
Remember the flip side from Step 1. A site must be included in Search generative AI features to be eligible for display[3]. So Exclude isn’t a neutral switch. It takes you out of those features entirely.
Watch out
Exclude removes impressions and traffic from the AI features. It’s a bigger decision than a nosnippet tag on a few pages, so make it deliberately.
Step 4: Use noindex only when you want the page gone
The noindex rule removes a page from Search results[4]. It’s the right tool when the page shouldn’t appear anywhere, such as a thank-you page or a private landing page. It’s the wrong tool if you only want a shorter preview, because the page disappears from ordinary results too.
Two conditions apply:
- It works only if the page isn’t blocked in robots.txt, because Google has to crawl the page to see the tag[4].
- A recrawl can take months, so don’t expect the page to vanish quickly[4].
If your goal is simply limiting AI use, try nosnippet first and keep noindex for pages you truly want out of Search.
Which control should you pick?
| Goal | Control |
|---|---|
| Show nothing from one page | nosnippet or max-snippet:0 |
| Show a short preview only | max-snippet:[number] |
| Hide one block of text | data-nosnippet |
| Opt the whole site out of AI features | Search generative AI control: Exclude |
| Remove a page from Search | noindex |
What the Google pages do not say
Google’s documentation leaves some gaps, and it’s better to know them than to fill them with assumptions.
- Nothing in these pages says whether a page with nosnippet can still appear as a link in AI answers. Don’t plan around either outcome.
- The pages don’t say any of these controls change your rankings, so don’t treat them as ranking levers.
- The documentation doesn’t give removal or update times beyond those above: 1 to 2 days for the Search Console setting, and months for a noindex recrawl.
- The data-nosnippet page doesn’t mention AI features, so its effect there isn’t documented.
- Eligibility is never a promise. Even a perfectly set up page isn’t guaranteed to be shown[3].
FAQs
How do I stop Google showing my content in AI Overviews?
Does nosnippet block AI Mode as well as AI Overviews?
Yes. Google says nosnippet blocks text snippets and video previews in web search, Images, Discover, AI Overviews and AI Mode, and it stops direct input use. A static thumbnail may remain[1].
What does max-snippet:-1 mean?
It lets Google choose the snippet length. At the other end, 0 behaves like nosnippet, and any positive number caps the snippet at that many characters[1].
Where is the Search generative AI control in Search Console?
Open Search Console, go to Settings and look for Search generative AI control. The options are Include (the default), Exclude and Inherit from parent[2].
How long does the Exclude setting take to work?
Google says it usually takes 1 to 2 days and a few days at most[2]. Check your property again after that window rather than reversing the setting straight away.
Does opting out of AI features affect AI training?
Google says the Search generative AI control does not affect AI training[2]. It only covers AI Overviews, AI Mode and Discover AI features.
Why isn’t my nosnippet tag working?
Should I use noindex to keep a page out of AI answers?
Only if you want it out of Search results entirely[4]. It needs the page to be crawlable, and a recrawl may take months. For a lighter touch, nosnippet is usually the better fit.
Where to go from here
Pick the narrowest control that does the job: a tag for one page, the Search Console setting for the whole site, noindex only for pages that shouldn’t be in Search at all. Then check the live result and give Google a few days to catch up. If you want help deciding how limiting or encouraging AI features fits into your wider plan, see our AI visibility work at https://oxfordimpulse.com/ai-visibility/ .
Sources
- Robots meta tag specifications developers.google.com
- Search generative AI control (Search Console Help) support.google.com
- AI features and your website developers.google.com
- Block Search indexing with noindex developers.google.com
