Search Quality Rater Guidelines: definition
99Visibility Research · Updated October 21, 2026 · 4 min read
Short answer
The Search Quality Rater Guidelines (QRG) are Google's manual for the human quality raters who evaluate whether search results are helpful and trustworthy. Raters judge sample results against the document's definitions, such as page quality and E-E-A-T. Their ratings do not move any individual page up or down. That is why no rater score exists that a site can earn, check or improve.
Key takeaways
- The Search Quality Rater Guidelines are a training manual for human raters, not a list of ranking factors.
- Google states that ratings are not used to position results, because humans could never rate every page on the open web.
- E-E-A-T comes from the guidelines, and Google says it isn't a specific ranking factor, so there is no E-E-A-T score to improve.
- For AI visibility, the levers that hold up are access levers (crawling, rendering, indexing, snippet controls), not rater concepts.
What the Search Quality Rater Guidelines are
The Search Quality Rater Guidelines are a long document Google writes for the people it hires to assess search results. Practitioners often shorten the name to QRG. The revision checked for this library was dated September 11, 2025 and ran to 182 pages.
The document defines what Google means by quality. It covers concepts such as page quality, E-E-A-T (experience, expertise, authoritativeness, trustworthiness) and topics where a bad answer could harm someone. It's a definitions manual for evaluators. It isn't a technical spec for site owners.
The practical takeaway: read it to understand how Google thinks about helpful content, not to find a checklist that moves rankings.
How quality rating works
Raters look at sample queries and results, then judge them against the guidelines. Google treats those judgements as feedback on how well its systems serve people. The judgements are not applied to the pages that were rated.
The guidelines say this directly: "Using ratings to position results on the search results page would not be feasible, as humans could never individually rate each page on the open web."
Two things follow from that sentence:
- A rater cannot push your page up or down.
- No per-page or per-site rater score exists, so no tool can report yours.
The guidelines also define authoritativeness per topic, not per site. Raters are asked to "consider the extent to which the content creator or the website is known as a go-to source for the topic." That is a judgement about a subject, not a number attached to a domain.
Why it matters for AI visibility
Many AI search playbooks borrow language from the rater guidelines and repackage it as an AI ranking factor. The evidence does not support that move. Google states that E-E-A-T "isn't a specific ranking factor" in its people-first content guidance.
For Google's AI features, the documented gate is mechanical. As of October 2026, Google's AI features page says a page must be indexed and eligible to be shown with a snippet to appear as a supporting link in AI Overviews or AI Mode, and that there are "no additional technical requirements." Google's AI optimization guide adds that you don't need to write in a specific way for generative AI search. Our digest of Google's guidance on AI-generated content covers the same position.
So the next move is to check access before anything else: can crawlers fetch your pages, is the key content in the HTML before JavaScript runs, and are you indexed without accidental noindex or nosnippet. Those steps decide whether you reach retrieval at all. Nobody outside Google controls what the model then says. If you want a snapshot of how engines currently describe you, the free checker on this site runs up to three buyer questions.
Common misconceptions
"Improve your E-E-A-T score"
There is no E-E-A-T score. Google says it isn't a specific ranking factor, and the guidelines say ratings don't position results. Any tool showing one invented it.
"Raters decide what appears in AI Overviews"
Ratings don't rank pages in classic results, and nothing in Google's documentation says they pick AI Overview sources. See whether quality raters decide what appears in AI Overviews.
"The guidelines prove domain authority matters"
Domain Authority is a Moz metric. Google publishes no site-level authority score, and the guidelines define authoritativeness per topic. Google does run a news-scoped topic authority system, so "Google has no notion of authority" overreaches too.
"Ignore the guidelines entirely"
Also wrong. They're a clear statement of what Google counts as helpful. Use them as editorial context, not as a ranking lever.
Frequently asked questions
Can a quality rater lower my site's rankings?
No. Google's guidelines state that using ratings to position results would not be feasible, because humans could never rate each page on the open web. Raters evaluate samples so Google can judge result quality overall. If your traffic drops, look at documented causes instead: indexing status, crawler access, rendering, snippet controls, or Google's spam policies. A rater visit is not one of them.
Is E-E-A-T a ranking factor for AI Overviews?
Google says E-E-A-T isn't a specific ranking factor, and its AI features page says there are no additional requirements to appear in AI Overviews or AI Mode beyond being indexed and snippet-eligible. E-E-A-T describes qualities Google's systems try to reward through other signals. It is a concept from the rater guidelines, not a metric you can measure or raise.
Should I rewrite my content to match the guidelines?
Rewriting to tick rater boxes is not a lever with evidence behind it. Google's AI optimization guide says you don't need to write in a specific way for generative AI search. Read the guidelines to understand what helpful means to Google, then write for your buyers. State specific facts clearly, such as prices and definitions, on pages crawlers can fetch.
What does QRG stand for?
QRG is shorthand for Quality Rater Guidelines, the common short name for Google's Search Quality Rater Guidelines. You will also see "rater guidelines" or "SQRG". All refer to the same manual Google writes for human evaluators of search results. The revision checked for this library was dated September 11, 2025.
Do the guidelines say anything about domain authority?
No. Google publishes no site-level authority score and does not use the term domain authority, which is a Moz metric. The guidelines treat authoritativeness as a per-topic judgement: whether a creator or website is known as a go-to source for a subject. Building a third-party authority number does not map onto anything raters or Google's systems compute.
Sources
This page is AI-assisted. It was written from a verified evidence base and checked against our editorial policy. Engine behaviour changes often; facts are as of October 21, 2026.