Google’s leaked ranking factors revealed—and how AI platforms use them
E-E-A-T (Experience, Expertise, Authoritativeness, Trust) is Google’s framework for evaluating content quality. But here’s what most don’t know: it’s not just for Google rankings—AI platforms like ChatGPT, Perplexity, and Gemini use the same signals to decide what content to cite.
Google’s internal API documentation leaked, revealing the exact machine-readable proxies for E-E-A-T. We now know precisely what signals Google (and by extension, AI platforms) look for in content.
This guide breaks down each component of E-E-A-T with the leaked attributes and practical implementation strategies.
| E-E-A-T Component | Conceptual Definition | Primary Machine-Readable Proxies (Leaked Attributes) | Strategic Imperative |
|---|---|---|---|
| Experience | Demonstrating first-hand, practical involvement with a topic. |
| Develop unique, high-effort, attributable content with original media and keep it meaningfully updated to demonstrate ongoing, first-hand experience. |
| Expertise | Possessing a high level of knowledge or skill in a particular field. |
| Build topically focused sites on clearly defined entities, and demonstrate topical expertise to signal the most important, expert-level content. |
| Authoritativeness | Being a recognised, widely cited source of information in an industry. |
| Pursue foundational links from trusted sources, build author entities, define the scale of your brand, and aim to become the ‘official’ source for key topics. |
| Trust | The reliability, accuracy, and security of the content, site, and author. |
| Eliminate all forms of spam, ensure technical, domain soundness and verifiable identity, and optimise for a clean, satisfying user experience. |
Key Leaked Attributes: contentEffect, originalContentScore, isAuthor, lastSignificantUpdate, productReviewPubDate, docImages
Experience is about proving you’ve actually done what you’re writing about. It’s the difference between “Here’s how to use this tool” (generic) and “After using this tool for 6 months in 50 client projects, here’s what works” (experienced).
Publish unique insights that only come from hands-on experience. Include specific examples, numbers, and real scenarios.
Example: “We tested 15 different email subject lines across 10,000 sends and found that questions increased opens by 23%.”
Include screenshots, photos, videos, and charts from your actual work. Stock photos signal lack of experience.
Signal: docImages attribute looks for unique, original visual content.
Show ongoing experience by updating content with new findings, examples, and data.
Signal: lastSignificantUpdate tracks meaningful updates, not just date changes.
Clearly attribute content to real people with verifiable identities and credentials.
Signal: isAuthor identifies content with clear authorship.
Key Leaked Attributes: siteRadius, contentEffect, siteEmbeddingEncoded, ymylHealthScore, ymylMusicScore
Expertise is about depth of knowledge in a specific field. Google measures this through topical clustering—how well your site covers a defined subject area.
Build comprehensive content clusters around core topics rather than scattered individual posts.
Signal: siteRadius measures topical consistency
Create interconnected resources that comprehensively cover your expertise area.
Signal: siteEmbeddingEncoded analyzes content relationships
Go beyond basics. Cover advanced topics, edge cases, and nuanced details experts care about.
Signal: contentEffect measures content sophistication
For health, finance, legal topics, meet higher expertise standards with credentials and citations.
Signal: ymylHealthScore, ymylMusicScore for sensitive topics
Key Leaked Attributes: siteAuthority, PageRank, authorityPromotion, hostNSR, relatedTopicScore
Authoritativeness is about being recognized externally as a credible source. It’s measured through links, mentions, and citations from other authoritative sites.
Guest post on 3-5 industry publications linking back to your cornerstone content. One link from an authoritative source > 100 links from low-quality sites.
Key Leaked Attributes: pagersDemotion, exactMatchDomainDemotion, GoodClicks/BadClicks, scamness, ContentChecksumMD
Trust encompasses technical security, content accuracy, and user safety. It’s the most critical component—without trust, the other three don’t matter.
Secure connection for all pages (hacksSafeCertificate)
Real address, phone, email visible (verifiable identity)
Transparent policies for user data
No intrusive ads, popups, or deceptive patterns (GoodClicks signal)
Stable content, not constantly changing (ContentChecksumMD)
Keyword stuffing, hidden text, cloaking (pagersDemotion)
Spammy exact-match domains (exactMatchDomainDemotion)
Clickbait, false promises, deception (scamness)
High bounce, pogo-sticking (BadClicks)
Malware, hacked content, no HTTPS
Score each factor on a scale of 0-10. Multiply by the weight percentage to get weighted scores. Total possible score = 100 points. Aim for 75+ for strong E-E-A-T.
| Factor | What to Check | Weight | Score (0-10) |
|---|---|---|---|
| Original Content | Does content demonstrate first-hand experience with specific examples, case studies, or original data? | 30% | ___ |
| Original Media | Are images, screenshots, and videos original rather than stock photos? | 25% | ___ |
| Author Attribution | Is content clearly attributed to real authors with verifiable identities and credentials? | 25% | ___ |
| Content Freshness | Is content regularly updated with new findings, examples, and current data? | 20% | ___ |
| Factor | What to Check | Weight | Score (0-10) |
|---|---|---|---|
| Topical Focus | Does the site demonstrate clear topical focus with comprehensive coverage of 3-5 core topics? | 35% | ___ |
| Content Depth | Does content go beyond basics to cover advanced topics, edge cases, and nuances? | 30% | ___ |
| Content Clusters | Are related articles interlinked in topic clusters showing comprehensive coverage? | 20% | ___ |
| YMYL Compliance | If YMYL content, do authors have relevant credentials and professional qualifications? | 15% | ___ |
| Factor | What to Check | Weight | Score (0-10) |
|---|---|---|---|
| Backlink Quality | Do you have quality backlinks from authoritative industry sites, .edu, .gov, or major publications? | 30% | ___ |
| Brand Recognition | Is your brand mentioned in industry publications, forums, reviews, and social media? | 25% | ___ |
| Original Research | Have you published cite-worthy original research, surveys, or data studies? | 25% | ___ |
| Author Profiles | Do authors have established profiles (Wikipedia, LinkedIn, speaking engagements, publications)? | 20% | ___ |
| Factor | What to Check | Weight | Score (0-10) |
|---|---|---|---|
| Technical Security | HTTPS site-wide, valid SSL certificate, no security warnings or malware? | 25% | ___ |
| Transparency | Clear contact info, about page, author bios, privacy policy, and terms of service? | 25% | ___ |
| User Experience | No intrusive ads/popups, fast loading, mobile-friendly, clean design? | 25% | ___ |
| Content Accuracy | Are facts verified, sources cited, claims substantiated, and corrections made when needed? | 25% | ___ |
Brand: Regional healthcare network (15 facilities)
Challenge: Competing against WebMD and Mayo Clinic for health information queries, low authority in YMYL category
Key Takeaway: “YMYL content requires exceptional E-E-A-T. By having verified medical professionals author content and implementing rigorous peer review, we went from Google penalties to featured snippets and AI citations.” – Chief Medical Officer
Brand: Independent financial planning firm (8 advisors)
Challenge: Competing against NerdWallet, Investopedia, and large banks for financial advice queries
Key Takeaway: “Publishing original research positioned us as thought leaders. AI platforms cite our Retirement Readiness Index, and prospects arrive already trusting our expertise.” – Managing Partner
Brand: Supplement and nutrition company (£12M annual revenue)
Challenge: Hit by Google’s Medic Update, lost 73% of organic traffic due to weak E-E-A-T signals
Key Takeaway: “The penalty was devastating but forced us to build proper E-E-A-T. Now we’re not just recovered—we’re stronger than ever with AI platforms citing our expert-authored content.” – CEO
Brand: Enterprise software company (HR tech platform)
Challenge: New market entrant competing against established brands with 10+ years of content
Key Takeaway: “As a new entrant, we couldn’t compete on brand recognition alone. Building strong E-E-A-T through original research and expert contributions leveled the playing field.” – VP of Marketing
E-E-A-T isn’t directly measurable like traditional metrics, but you can track proxy indicators that signal improvements across all four components.
| Metric | What It Measures | How to Track | Target |
|---|---|---|---|
| Original Content Ratio | % of content with first-hand insights vs. aggregated information | Manual content audit | 70%+ |
| Content Update Frequency | How often top pages receive meaningful updates | CMS tracking, Google Search Console | Quarterly |
| Author Attribution Coverage | % of content with clear author bylines and bios | Site audit | 100% |
| Metric | What It Measures | How to Track | Target |
|---|---|---|---|
| Topical Authority Score | Depth and breadth of coverage on core topics | SEO tools (Ahrefs, Semrush topical authority reports) | 80%+ coverage |
| Average Content Depth | Word count and comprehensiveness of articles | Content analytics tools | 2,000+ words |
| Content Cluster Completeness | % of topic clusters with 10+ interlinked articles | Content inventory analysis | 100% of core topics |
| Metric | What It Measures | How to Track | Target |
|---|---|---|---|
| Domain Authority (DA) | Overall site authority based on backlink profile | Moz, Ahrefs Domain Rating | 60+ (varies by industry) |
| Quality Backlink Growth | New backlinks from DA 50+ sources per month | Ahrefs, Semrush backlink tracking | 5-10 per month |
| Brand Mention Volume | Unlinked mentions of your brand across the web | Google Alerts, Brand24, Mention | Increasing trend |
| AI Citation Frequency | How often AI platforms cite your content | Searchable.ai, manual testing | Increasing trend |
| Metric | What It Measures | How to Track | Target |
|---|---|---|---|
| Core Web Vitals Score | Technical performance (LCP, FID, CLS) | Google Search Console, PageSpeed Insights | All metrics “Good” |
| Security Issues | Security warnings, malware, mixed content | Google Search Console security issues | Zero issues |
| User Engagement | Bounce rate, dwell time, pages per session | Google Analytics 4 | Below 50% bounce, 2+ min dwell |
| Manual Action Penalties | Google manual penalties for spam or quality issues | Google Search Console manual actions | Zero penalties |
Set up a monthly tracking dashboard combining these metrics to visualize E-E-A-T progress over time. Track month-over-month changes and set quarterly improvement goals for each component.
E-E-A-T itself isn’t a direct ranking factor, but the leaked Google API documents reveal specific machine-readable signals (contentEffect, originalContentScore, siteAuthority, etc.) that serve as proxies for E-E-A-T evaluation. These signals directly influence rankings.
Trust improvements (HTTPS, UX fixes) can show results in 1-2 months. Experience and Expertise signals typically take 3-6 months. Authoritativeness (backlinks, brand mentions) requires 6-12 months of consistent effort to build meaningfully.
No. YMYL content (health, finance, legal) requires exceptional E-E-A-T (85+ score), but general informational content can succeed with moderate scores (70+). Prioritize E-E-A-T investment based on content impact and business value.
Yes! Small businesses can build strong E-E-A-T through niche expertise, first-hand experience, and local authority. Focus on specific topics where you have genuine expertise rather than competing broadly. Quality and depth beat brand size in specialized niches.
AI platforms use similar quality signals to Google when selecting content to cite. Strong E-E-A-T signals (verified authors, original research, credible sources) make your content more likely to be cited by ChatGPT, Perplexity, and other AI systems.
For YMYL topics, hire verified experts (doctors, lawyers, financial advisors). For other topics, existing staff with genuine experience can build E-E-A-T by documenting credentials, sharing first-hand knowledge, and establishing author profiles.
Track proxy metrics: increasing rankings for competitive keywords, growing backlink portfolio from quality sources, higher domain authority, featured snippet wins, AI citations, and improved user engagement metrics (lower bounce rate, higher dwell time).
Publishing content without clear authorship or expertise signals. Many sites have quality content but don’t properly attribute it to real people with verifiable credentials, missing critical E-E-A-T signals that both Google and AI platforms look for.
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