Why do I need max-image-preview:large?

Google Discover exclusively features high-resolution banner images for sites that explicitly provide the max-image-preview:large directive in their robots meta tag.

Can I target Googlebot specifically with its own meta tag?

Yes! You can use to specify rules intended strictly for Google without affecting other search engines like Bing or DuckDuckGo.

How do I configure meta robots in Next.js?

In Next.js App Router, configure robots inside your Metadata export: export const metadata = { robots: { index: true, follow: true, googleBot: { 'max-image-preview': 'large' } } }.

Meta Robots Tag Builder & Crawler Directives Generator

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Configure noindex, nofollow, max-snippet, max-image-preview, and noarchive directives for Googlebot and search crawlers.

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Meta Robots Tag Builder Generator

Configure noindex, nofollow, max-snippet, max-image-preview, and noarchive directives for Googlebot and search crawlers.

Presets:

Configuration Inputs

Indexing Directive (index / noindex)

Link Following Directive (follow / nofollow)

Max Image Preview Size (Google Discover)

Controls the maximum size of image thumbnails shown in search and Google Discover.

Max Snippet Length in Characters

NoArchive (Prevent Google Cached Copies)

NoSnippet (Disable Text Snippets & Previews)

<!-- Googlebot & Search Engine Directives -->
<meta name="robots" content="index, follow, max-snippet:-1, max-image-preview:large" />
<meta name="googlebot" content="index, follow, max-snippet:-1, max-image-preview:large" />

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The Comprehensive Guide to Meta Robots Directives & Google Discover

Comprehensive Technical Guide & Best Practices

1How Search Engines Interpret Robots Meta Tags

The robots meta tag (<meta name="robots" content="...">) gives website owners granular, page-by-page control over how search crawlers index content and pass link equity. While robots.txt blocks crawlers from accessing URLs entirely, the robots meta tag allows crawlers to fetch the page while strictly obeying indexing restrictions (such as indexing without following links, or vice-versa).

Crucially, modern search engines like Google also support fine-grained preview controls (such as max-image-preview:large and max-snippet:-1) which directly determine your eligibility for Google Discover traffic.

Key Optimization Takeaways

noindex stops a page from appearing in search results while allowing search engines to crawl it.
max-image-preview:large is mandatory for maximizing Google Discover CTR and impression volume.
Do not block noindexed pages in robots.txt; doing so prevents crawlers from reading the noindex tag.

2Meta Robots Directives Breakdown

Key directives supported across major search engines in 2026:

index / noindex: Tells search engines whether to store the page in their search index.
follow / nofollow: Tells crawlers whether to follow links found on this page to discover other URLs.
max-image-preview:large: Authorizes Google to display full-width high-resolution images in search cards and Discover.
max-snippet:[number]: Limits the text snippet length in search results.
noarchive: Prevents search engines from caching HTML snapshots of the page.

Key Optimization Takeaways

Combine index, follow, max-image-preview:large as the gold standard for marketing pages.
Use noindex, follow on paginated blog category archives to pass equity to older articles without indexing thin lists.

Frequently Asked Questions

Answers to common questions about Meta Robots Tag Builder

robots.txt tells crawlers which URLs they are not allowed to request or download. Meta robots tells crawlers what they can do with a page after downloading it (such as indexing, caching, or following links).

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