Schema.org JSON-LD audit · 2026-05-18

Author: Simon Azoulay Scope: site-wide structured-data audit + per-page-type coverage. Follow-up to the author/E-E-A-T workstream switching blog bylines from Organization "Sigma Research" to Person Simon Azoulay.

1. Author entity

Introduced src/lib/seo/author.ts. Single source of truth for:

• SIMON_AUTHOR — Person, @id = /about/#simon, LinkedIn as both url and sameAs, jobTitle = "Founder & Lead Researcher", worksFor pointing to the org.
• PUBLISHER_ORG — Organization with stable @id = /#organization, matching the layout-level Organization node so Google can dedupe.
• resolveArticleAuthor(name) — keeps explicit guest bylines if ever set, otherwise returns SIMON_AUTHOR.

Wired into:

• /blog/[slug] (Article.author, was Sigma Research)
• /about (root Person + Organization.founder)
• /layout.tsx root Organization.founder (was missing; sameAs was [])

2. Visible byline

Blog hero now reads By [Simon Azoulay] · DATE · MIN read, with the name wrapped in a <Link href="/about/">. This builds the on-page author link Google expects to walk for E-E-A-T evidence.

3. Per-page-type coverage

Page type	Route	Schema types	Status
Root entity	/, every page (layout)	Organization, WebSite+SearchAction	Existed. Added founder + populated sameAs with LinkedIn.
Founder	/about	Person, Organization, BreadcrumbList	NEW. Linked from every blog byline.
Article	/blog/[slug]	Article, BreadcrumbList	Existed. Added articleSection, keywords, isPartOf, mentions (already had), swapped author → Simon.
Blog hub by category	/blog/category/[key]	BreadcrumbList, ItemList	NEW (was bare).
Company	/company/[slug]	Organization, BreadcrumbList	Org existed. Breadcrumb NEW.
Insider	/insider/[slug]	Person, BreadcrumbList	Person existed. Breadcrumb NEW.
Company hub paginated	/companies/, /companies/page/[n]	BreadcrumbList	NEW via _shared.tsx.
Insider hub paginated	/insiders/, /insiders/page/[n]	BreadcrumbList	NEW via _shared.tsx.
Pricing	/pricing	FAQPage, BreadcrumbList	NEW. 5 EN + 5 FR Q/A pairs.
Performance	/performance	Dataset, BreadcrumbList	NEW. Dataset CC-BY 4.0, free, links to /api/backtest/summary.
Backtest	/backtest	Dataset, BreadcrumbList	NEW. Dynamic temporalCoverage + transaction count.
Compare vendor	/compare/[vendor]	—	Skipped (each vendor is a hand-written page; covered by root layout Organization+WebSite).
Docs	/docs	—	Skipped this pass; FAQ section to be migrated to FAQPage later.
Recommendations	/recommendations	—	Skipped (1100-line file, multiple return paths; needs a refactor before injecting ItemList).

4. Article schema completeness

Current Article payload now ships:

@context, @type, headline, description, inLanguage,
datePublished, dateModified, wordCount, image,
articleSection, keywords, author (Person), publisher (Organization),
mainEntityOfPage, isPartOf (#website), mentions[]

Validated by mental SDTT model: all required Article properties present when image is set. Articles without heroImageUrl will still validate as a generic Article (image is recommended, not required).

5. Org graph consistency

@id strategy:

• Organization: ${BASE}/#organization (layout + publisher refs + dataset creator)
• Website: ${BASE}/#website (layout + article isPartOf)
• Founder: ${BASE}/about/#simon (layout founder + about page Person)

This lets Google merge the three references into one node in the knowledge graph instead of treating each as a separate orphan entity.

6. Known gaps (not addressed this pass)

• /recommendations — needs an ItemList of the top N reco cards. Skipped because the page has 16 separate return ( branches; deserves a dedicated refactor.
• /compare/* — five vendor comparison pages, each could carry a ComparisonTable (no schema exists, would use WebPage with mainEntity of two SoftwareApplication / Product).
• /docs FAQ section — should be promoted to its own FAQPage.
• /insider/[slug] jobTitle — uses primaryRole via translateRole, could be enriched with worksFor end-date when EmployeeRole is known.

7. Lint / typecheck

npx tsc --noEmit passes after all edits.