72
E-E-A-T Periodic Table
72 quality signals for modern SEO · every cell links to the signal guide
Self-assessment 0/72 signals assessed · average 0/10
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E
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Cross-cutting concepts
69 Ym YMYL 70 Qr Quality Rater 71 Sg3 Search Generative 72 Bd Brand search Anti-signals
Their presence hurts your rating, the 6 Lowest/Low patterns from the Quality Rater Guidelines (Sept. 2025).
Index of the 72 signals
Experience
- Tm · Lived testimonial , A first-person account of direct experience with the subject (product, service, place).
- Ph · Original photo , An image taken by the author, not from stock libraries.
- Vd · Field video , A video demonstration recorded by the author in a real-world situation.
- Cs · Case study , A detailed analysis of a real project or client with quantified results.
- Ut · User test , A testing protocol run by the author, with observations and conclusions.
- Jr · Logbook , A chronological record of prolonged use (e.g. 30 days with X).
- Av · Before / After , A visual or quantified comparison of an initial and final state.
- Ds · Screencast demo , A screen recording of the author performing a task.
- Pp · Product photo , A photo of the product in hand, unboxing, personal usage context.
- An · Anecdote , A short illustrative story drawn from the author's experience.
- Ev · Event , A report on an event the author attended.
- Iv · Interview , An original interview conducted by the author with a figure in the field.
- Mt · Personal method , A framework or recipe developed and tested by the author.
- Ph2 · Process gallery , A series of photos documenting the steps of a process.
Expertise
- Dp · Degree , Mention of academic qualifications relevant to the topic.
- Cf · Certification , A recognized professional certification (Google, AWS, professional body, etc.).
- Pb · Publication , An academic article, book or professional publication by the author.
- Cf2 · Speaker , A speaking appearance at an event in the field.
- Xp · Years of XP , Explicit mention of the number of years practicing in the field.
- Sp · Specialization , A clearly claimed niche or subfield of expertise.
- Mc · Main content quality , Effort, originality, skill and depth demonstrated in the main content (MC).
- Dn · Proprietary data , An original statistic, study or survey produced by the author.
- Tx · Technical lexicon , Confident use of specialized vocabulary, defined where needed.
- Sc · Explanatory diagram , An original diagram designed by the author to clarify a concept.
- Bp · Best practice , Recommendations drawn from the field's consensus.
- Co · Comparison , A rigorous comparison table between market options.
- Fa · Expert FAQ , Frequently asked questions answered with technical precision.
- Pr · Technical proof , A formal demonstration, calculation, code or benchmark.
- Op · Reasoned opinion , A clearly owned and justified personal position.
- Vt · Active monitoring , Reference to the latest developments and publications in the field.
Authoritativeness
- Bl · Authority backlink , An inbound link from a recognized site in the field.
- Mn · Brand mention , A citation of the site/author without a hyperlink.
- Wk · Wikipedia , Presence as a source or subject on Wikipedia.
- Ea · Verifiable author entity , Person schema + sameAs linking the author to all their verifiable public profiles.
- Pf · Pro profile , LinkedIn, GitHub, ORCID profiles linked from the site.
- Pr2 · Press , Editorial coverage in recognized media.
- Pd · Guest podcast , Guest appearances on podcasts in the field.
- Aw · Award , A recognized award or distinction in the field.
- Pt · Partnership , An official collaboration with a recognized organization.
- Cm · Community , An engaged audience (newsletter, Discord, forum) led by the author.
- Sp2 · Sponsoring , Support of community events or content.
- Au · Guest author , Articles published on other reference sites.
- Ds2 · Cited dataset , A dataset produced by the author and reused by others.
- Tk · Brand track record , Demonstrated history and lasting reputation of the brand in its field.
- Ld · Leadership , A leading position or the founding of a movement, method, community.
- Cn · Co-signature , Content co-signed with other recognized experts.
- Ce · Advisory / Board , Member of an advisory or governing board.
Trustworthiness
- Bg · Personal bio , A presentation of the author, background, reason for covering the topic.
- Mq · Update , A dated revision of content to reflect the current state of the field.
- Eq · Online reputation , Consistency and quality of Google results for the brand/author name.
- Hs · HTTPS , A valid SSL certificate across the entire site.
- Mt2 · Legal notice , A complete, accessible legal notice page.
- Pv · Privacy policy , A GDPR-compliant privacy policy.
- Ct2 · Real contact , Verifiable contact details: email, phone, postal address.
- Ab · Detailed About , An 'About' page with mission, team, history, values.
- Av2 · Verified reviews , Customer reviews via an independent third-party platform.
- Tp · Price transparency , Public prices, clear terms, no hidden costs.
- Cy · NAP consistency , Name-Address-Phone identical everywhere (site, GMB, directories).
- Sg2 · Signature , Articles signed by an identified author, linked to a detailed profile.
- Sr · Cited sources , Outbound links to primary, recognized sources.
- Cr · Correction , A visible correction policy, dated errata.
- Cf3 · Conflict of interest , Disclosure of affiliations, sponsorships, vested interests.
- Sc2 · Security , A site free of malware, security alerts, fake content.
- Ex · Factual accuracy , Verified facts, sourced figures and consistency with established expert consensus.
- Px · Page experience , Main content accessible without obstacles: discreet ads, clean consent, clear navigation.
- Nm · Needs Met , The page fully answers the real need behind the query (Needs Met).
- Sv · Visible customer service , Identified responsible party and reachable customer service, especially on YMYL and transactional pages.
- Ld2 · Client logos , Client or reference logos displayed, with permission obtained.
Cross-cutting concepts
- Ym · YMYL , Your Money or Your Life: health, finance, safety topics held to a heightened E-E-A-T standard.
- Qr · Quality Rater , Human evaluators who rate pages according to Google's official guidelines.
- Sg3 · Search Generative , Appearing in generative summaries (AI Overviews, SGE).
- Bd · Brand search , The volume of searches on the brand/author name.