- Who it helps
- Website publishers managing crawler and content-use settings.
- Availability
- October 30 announcement targets support in 2027. The proposal is still being developed; current company-specific controls continue to apply.
One preference across participating providers
The proposed policy token would express a broad training choice. Google says that an opt-out without an explicit Google-Extended rule would be interpreted as a Google-Extended block.
Google plans support for a shared website AI-training preference ↗
Existing controls still matter
Google says company-specific instructions will remain available alongside the shared signal. It also links Google-Extended permission to eligibility for grounding in Gemini Apps, so training and answer-use implications need separate review.
Google plans support for a shared website AI-training preference ↗
What you can do
- Read the linked primary evidence and its access limits before planning a trial. Open reference ↗
Where the evidence stops
No crawler behavior tested. This is an announced plan, not confirmation that all providers currently honor the signal.
Sources read. Sources read November 5, 2026 UTC. No third-party project, model inference or complete product workflow was executed.
Sources & further reading
Web · official
Google plans support for a shared website AI-training preference ↗
Primary page read November 5. Claims were checked against the page; the workflow was not executed.
Google Search Central · page checked 2026-11-05
Coverage note: Original YouTube demonstrations and independent cross-platform attention were not established. No end-to-end workflow was executed.
The record over time (1)
Dated source checks and published explanations. An observation date can differ from the original release date.
- · Added to Current
Google plans to recognize a shared robots.txt signal for website owners’ AI-training preferences.