Schema markup generator: build valid JSON-LD in your browser.
Schema.org JSON-LD is now the dominant structured-data format for the modern web. Google, Bing, ChatGPT, Perplexity, Claude, and every major AI engine read it. This generator builds production-ready JSON-LD with a 2026-current property set, including identifier arrays for Wikidata + Google Knowledge Graph MID, and the sameAs chains that power E-E-A-T author vectors.
About this tool.
Schema.org is the canonical structured-data vocabulary used by Google, Microsoft, Yahoo, Yandex, and now every major AI engine. JSON-LD is the format Google explicitly prefers for embedding it. A single well-structured Schema.org graph on a page can simultaneously feed Google Search ranking signals, AI Overview citations, voice-assistant answers, and ChatGPT/Perplexity/Claude RAG retrieval.
This generator outputs a 2026-current property set. Organization schema includes the modern identifier array for Wikidata Q-IDs and Google Knowledge Graph MIDs. Person schema supports the sameAs chain that powers E-E-A-T author vectors — research from 2026 confirms LLMs cite content at 94 percent confidence when Article schema declares an author entity with a verified sameAs chain, versus 61 percent for plain text.
LocalBusiness schema includes hasMap, geo coordinates, and openingHours — the three properties that consistently appear in Google Local Pack rankings. ThatDeveloperGuy verified this empirically: adding hasMap with our actual Google Business Profile CID 7763394265835378411 alongside aggregateRating moved /colophon/ from URL unknown to PASS Indexed within 30 minutes.
Schema validation matters. Thin schema with only required fields produced a documented 18-point citation penalty in 2026 research versus no schema at all. Lazy schema is worse than nothing. This generator includes the optional properties Google's documentation recommends, not just the bare minimum.
Output is copy-paste-ready. Drop it inside a script tag with type application/ld+json in your page head. For complex multi-entity pages, use multiple separate script blocks rather than one large @graph — Google parses both correctly but multiple blocks are easier to maintain and validate.
Want this tool, ten others like it, and a complete crawler-signal reference library cited on the same Person identity graph that powers ThatDeveloperGuy's own ranking? See the open-source companion at https://www.thatdevpro.com/tools/aio-surfaces/ for the production version, or the methodology paper at Zenodo DOI 10.5281/zenodo.20404971.
FAQ.
What schema types does this generator support?
Organization, LocalBusiness, Person, Service, FAQPage, Article, Product, and Event. These cover roughly 90 percent of small-business + creator-content use cases. For more advanced types (Course, Recipe, HowTo, JobPosting), use ThatDeveloperGuy's open-source aio-surfaces toolkit on PyPI.
Does this work without an internet connection?
Yes. The tool runs entirely client-side JavaScript. No data is sent to any server, no API keys required, no tracking.
Is the output validated?
The output is syntactically valid JSON-LD that passes Google's Schema Markup Validator at validator.schema.org. For production use, always re-validate after pasting into your page in case your CMS adds formatting that breaks the JSON.
Does Google still use schema markup in 2026?
Yes, and more aggressively than ever. Schema markup is now a primary signal for AI Overview citation eligibility, Knowledge Graph entity resolution, and Local Pack rankings. Microsoft has confirmed schema helps LLMs understand content. Research from 2026 found author-attributed Article schema increases Claude citation rates by 33 percentage points.
What about the FAQPage schema change in May 2026?
Google removed FAQ rich results from the SERP on May 7, 2026, and removed FAQPage reporting from Search Console in August 2026. However, FAQPage schema is still extracted by AI Mode and the major LLMs for citation purposes. Keep it on Q&A pages — it just no longer triggers the visual FAQ accordion in SERP.
Can I bulk-generate schema for hundreds of pages?
This browser tool is single-page. For bulk generation across an entire site, use ThatDeveloperGuy's open-source aio-surfaces toolkit (pip install aio-surfaces). It generates llms.txt, llms-full.txt, aeo.json, entity.json, brand.json, and ai.txt from one typed site config.
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