This check flags a page where an author is named but nothing tells the reader why that person is qualified to write it: no credentials, no relevant experience, no evidence of first-hand knowledge. The stakes climb sharply on YMYL topics, where medical, financial, and legal claims made by an anonymous-in-practice author invite doubt from readers and quality raters alike.
What this check flags and why it matters
A byline answers "who." Credentials answer "why should I believe them." This check is about the second question. A name at the top of a diabetes-management guide or a tax-strategy article does little on its own; the page needs to show the writer has the standing to make the claims. Be clear on the mechanism: E-E-A-T is a framework from Google's Quality Rater Guidelines, not a direct ranking factor. Raters assess expertise; the systems only approximate it. Showing credentials is therefore a trust and credibility best practice, most load-bearing exactly where the topic can affect someone's health, money, or safety.
This is the layer above a missing bio
If your article has no author block at all, start with Author Bio Missing first. This check assumes the byline already exists and asks whether it carries any signal of expertise. "By Dave" with a smiling headshot passes the bio check and still fails this one on a page about anticoagulant dosing.
Encoding credentials in Person schema
Credentials belong in the visible bio first, then mirrored in structured data so machines read the same facts. The hasCredential, knowsAbout, and alumniOf properties carry the weight:
{
"@context": "https://schema.org",
"@type": "Person",
"name": "Dr. Elena Reyes",
"url": "https://seoprocheck.com/author/elena-reyes/",
"jobTitle": "Board-Certified Endocrinologist",
"worksFor": { "@type": "Organization", "name": "Northside Metabolic Clinic" },
"alumniOf": "Johns Hopkins School of Medicine",
"knowsAbout": ["Type 2 diabetes", "Thyroid disorders", "Metabolic health"],
"hasCredential": {
"@type": "EducationalOccupationalCredential",
"credentialCategory": "degree",
"name": "MD, Endocrinology (Board Certified)"
},
"sameAs": [
"https://www.linkedin.com/in/elenareyesmd",
"https://doximity.com/pub/elena-reyes-md"
]
}The visible byline should read the same story: "Reviewed by Dr. Elena Reyes, board-certified endocrinologist." An expert-reviewer line is a legitimate pattern when a staff writer drafts and a credentialed professional signs off; see expert review processes for YMYL content.
Which signal fits which topic
| Content type | Credential that carries weight | Where to show it |
|---|---|---|
| Medical / health (YMYL) | Licensed clinician, board certification, medical reviewer | Byline, "medically reviewed by" line, hasCredential |
| Finance / tax (YMYL) | CFP, CPA, licensed advisor, years managing assets | Bio, disclosure line, knowsAbout |
| Legal | Bar admission, jurisdiction, practice area | Bio, jurisdiction note, jobTitle |
| Hobby / how-to / hands-on | First-hand experience: "restored 40 of these myself" | Bio sentence, original photos in the article |
| Product review | Testing method, hands-on time, comparison basis | Methodology note, author's testing history |
Note the last two rows: the first E in E-E-A-T is Experience. On many topics, "I have actually done this" beats a formal certificate. A person who has personally rebuilt forty carburetors is more credible on the subject than someone with a mechanical-engineering degree and no wrenching time. Don't force a paper credential where lived experience is the real qualification, and don't hide the experience you do have behind a job title that says nothing about it.
How to detect it on your own site
- Pull your list of YMYL URLs first; those are where missing credentials do the most damage.
- On each, read the author bio and ask: does it state a single specific qualification tied to this topic?
- Check for a "reviewed by" or "medically reviewed by" line on health and finance pages.
- Inspect the JSON-LD for
hasCredential,knowsAbout, orjobTitleon the author node. - Confirm the credential is verifiable: a real license number, institution, or profile a reader could check.
How to fix it
- Rewrite thin bios to name one concrete, relevant qualification instead of generic enthusiasm.
- For YMYL pages without an in-house expert, add a named professional reviewer and a review date.
- Add
hasCredentialandknowsAboutto the author's Person schema, matching the visible bio. - Link credentials to something verifiable: a licensing board, a professional profile, or an author page.
- Never invent qualifications. Fabricated credentials are worse than none and can sink trust across the whole domain.
FAQ
Do I need a degree to write credibly on a topic?
Not always. For YMYL health, finance, and legal content, formal credentials matter a great deal. For most other topics, demonstrable first-hand experience is a valid and often stronger qualification.
Is an expert-reviewer byline as good as an expert author?
It is a legitimate model, common on health sites. A qualified reviewer who genuinely checks the content and is named, with a review date, adds real credibility, as long as the review is real and not decorative.
Will adding credentials boost my rankings?
Not directly. Credentials feed trust signals that quality raters and readers weigh, especially on YMYL topics. There is no credential score applied to your URL, so treat this as earning trust, not flipping a switch.
Where should credentials live: the bio or the schema?
Both, telling the same story. Readers and raters see the visible bio, so lead there. Schema lets machines and AI answer engines parse the same facts. A mismatch between them is a red flag.
Need a full technical audit?
SEO ProCheck runs deep crawls that catch issues like this across your whole site.
Claude Vincent is a technical SEO consultant focused on crawlability, rendering, and AI-search visibility. He writes the field guides and case studies at SEO ProCheck, with a bias toward the durable, unglamorous work that decides whether search engines and AI answer engines can actually read and cite a site.
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