1.1 Robots & directives (HTTP + HTML)CriticalVerified
X-Robots-Tag nosnippet/none in header
The same header that can carry noindex can carry nosnippet or none. The none value combines noindex and nofollow, so a single header line can both hide the page and cut its links.
What it is
Snippet suppression delivered via HTTP header.
Why it matters
Same AI-feature exclusion as the meta version, but hidden in headers.
How to fix it
Inspect and remove at server/CDN.
How to find it on your site
- Run curl -I on the page and inspect the X-Robots-Tag value in full.
- Look for nosnippet, none, or max-snippet:0.
- Cross-check against the HTML meta robots tag for conflicts.
- Edit the server or CDN rule that sets the header.
Cross-reference to ranking and citation factors
The none value is the bluntest directive of all. It removes both indexing and link flow, so it deserves the same urgency as a header noindex.
Impact
Severe/blocking for AI features. Direct.
Evidence
Header-delivered nosnippet/none governs snippet and AI-feature input. Google Search Central, Robots Meta Tags Specifications