Mentionable
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Free Schema Markup Generator

Generate JSON-LD schema markup for any page in seconds. Auto-detects page type, validates existing schema, and flags missing GEO opportunities. Free, no signup.

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Key Takeaways

  • Generate valid JSON-LD schema markup for 15 different page types: Article, Product, Blog, FAQ, How-To, Homepage, Local Business, Service, Software, Landing Page, About, Contact, Event, Recipe, and generic fallback.
  • Auto-detects your page type by analyzing the URL content, so you don't need to guess which schema to use.
  • Analyzes your existing schema markup and flags missing GEO opportunities with relevance scoring (high, medium, low).
  • Copy the generated script tag directly into your page head, or download the JSON-LD as a file. Ready to paste, no manual editing required.
  • Free tool, no signup required. Daily rate limit per IP to keep it available for everyone.

You want to rank in AI responses. You read that schema markup helps. You open schema.org, scroll through 1000+ entity types, and close the tab. Because that is not a tutorial, it is a reference manual written for search engineers.

The schema generator skips that part. You paste a URL, it figures out what kind of page it is, and gives you the JSON-LD you need. Copy, paste, done.

What it does in 10 seconds

  1. You paste a URL.
  2. The tool fetches the page and detects the type (product? article? FAQ? local business?).
  3. It checks what schema you already have.
  4. It generates the JSON-LD you are missing, with a GEO relevance score on each type.
  5. You copy the script tag and paste it into your page head.

No manual form to fill in. No guessing which schema type applies. No hunting through documentation.

15 schema types, auto-detected

The tool supports the 15 schema types that actually matter for AI visibility:

  • Article for blog posts and editorial content
  • Product for product pages with price and availability
  • BlogPosting for blog-specific articles
  • FAQ for Q&A sections (highly cited by LLMs)
  • HowTo for tutorials and step-by-step content
  • WebSite for homepages
  • LocalBusiness for physical locations with address and hours
  • Service for professional services pages
  • SoftwareApplication for SaaS and tool pages
  • Landing Page for marketing pages
  • AboutPage for about sections
  • ContactPage for contact sections
  • Event for events with date and location
  • Recipe for food content
  • Generic fallback for anything that does not fit the above

The auto-detection looks at the URL path, the HTML structure, headings, and content signals to pick the best match. You see the detected type and the reasoning before the schema is generated.

Why schema matters for AI visibility

Schema is not just for Google anymore. LLMs like ChatGPT, Perplexity, Gemini, and Copilot all use structured data to understand pages.

When an AI model reads your page with proper schema, it knows:

  • This is a product. Here is the price. Here is the brand.
  • This is a how-to. Here are the steps. Here is the estimated time.
  • This is an FAQ. Here are the questions. Here are the authoritative answers.

Without schema, the model has to infer all of this from raw HTML, which is slower, less reliable, and often wrong. Pages with proper schema are more likely to be cited in AI responses because the AI has cleaner data to work with.

This is especially true for FAQ and HowTo schemas. Perplexity and Google AI Mode routinely pull answers directly from FAQ-structured content. If you have the answer but not the schema, you might not show up at all.

What the output looks like

After the tool runs, you get three things.

The generated schema. A ready-to-paste JSON-LD script tag. You copy it, paste it into your page's <head>, and ship. No manual editing.

GEO relevance badges. Each schema type gets a high/medium/low relevance score based on its impact on AI visibility for that page type. If you are optimizing a product page, the Product schema is high relevance. A BreadcrumbList is medium. A sameAs link is low. Focus on high first.

Existing schema analysis. If your page already has JSON-LD, the tool lists what you have, counts the properties, and flags anything missing. This avoids duplicating schema you already ship.

GEO optimization tips. A short list of specific improvements you can make beyond the generated schema. Things like "add aggregateRating to your Product schema" or "include author and datePublished on your Article schema."

When to use it

Before publishing a new page. Generate the schema first so you ship with it baked in, not as a later afterthought.

Auditing an existing site. Run it on your top pages to find schema gaps. Most sites have 20% coverage at best. Closing the gap on high-traffic pages is one of the quickest wins for AI visibility.

Client audits. Agencies use it as a quick diagnostic in prospect pitches. "Your competitor has FAQ schema on their pricing page and is getting cited by Perplexity. You have no schema on yours." Concrete, visible, easy to fix.

Before launching a new product. Generate Product schema upfront so LLMs can parse the launch correctly from day one.

The limitations

This is a free tool with a daily rate limit per IP. Most users run 5 to 10 checks a day, which is comfortably within the limit. If you need bulk schema generation across dozens of pages, the rate limit will start to feel tight.

The tool generates schema based on publicly accessible page content. If your page requires authentication or heavy JavaScript rendering that is not server-side, some detection signals may be limited. The output is still valid, but more generic.

Try it yourself

Paste any URL. See the schema your page is missing. Copy the JSON-LD. Ship it. The whole flow takes less than 2 minutes per page.

Generate schema for your page

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Frequently Asked Questions

What is schema markup and why does it matter for AI visibility?
Schema markup (JSON-LD) is structured data that tells search engines and AI models what your page is about. For AI visibility, it is especially critical: LLMs like ChatGPT, Perplexity, and Gemini use structured data to understand entities, relationships, and facts about your brand. A page with proper schema is far more likely to be cited or recommended in AI responses.
Which schema types does the generator support?
Fifteen types, covering most use cases: Article, Product, BlogPosting, FAQ, HowTo, WebSite (Homepage), LocalBusiness, Service, SoftwareApplication, Landing Page, AboutPage, ContactPage, Event, Recipe, and a generic fallback for everything else.
How does the page type auto-detection work?
The tool fetches your page, analyzes the content, heading structure, and HTML signals, and picks the most relevant schema type. If it's a product page with price and buy buttons, it generates Product schema. If it's an article with an author and date, it generates Article schema. You see the detected type with a reasoning note before the schema is generated.
Does it check my existing schema markup?
Yes. Before generating new schema, the tool analyzes any existing JSON-LD on the page. It shows you which types you already have, how many properties each contains, and flags missing properties that would improve AI visibility. This avoids duplicating schema you already have.
What is GEO relevance scoring?
Each generated schema type gets a GEO relevance badge: high, medium, or low. High relevance means the schema directly improves how AI models parse and cite your page (critical for the page type). Medium is helpful but not essential. Low is technically valid but unlikely to move the needle. The scoring helps you prioritize what to implement first.
Is the generated schema valid JSON-LD?
Yes. The output is a properly formatted script tag ready to paste into your page head. It follows schema.org standards and includes all required properties for the detected type. You can validate it separately with Google's Rich Results Test if you want extra confirmation.
Is there a rate limit?
Yes. The free tool is rate-limited per IP on a daily rolling window to keep it available for everyone. Most users run a handful of audits per day, which is well within the limit. If you need higher volume, the rate limit does not apply inside the Mentionable app for paid users.

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