SchemaValid – Free JSON-LD & Schema Markup Generators (2026)

What is SchemaValid?

SchemaValid is a collection of free, browser-based tools for structured data and technical SEO. Everything runs locally on your device: nothing you enter is sent to a server, stored, or tied to an account. Generate valid JSON-LD schema markup, check IBANs, or build Open Graph meta tags — instantly.

It is built for website owners, small businesses and freelancers who need clean technical SEO without writing code. Structured data helps search engines and AI assistants understand your pages — which matters for classic Google results and, increasingly, for answers generated by AI search.

The tools

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Schema Markup Validator

Validate a live URL or JSON-LD code: SEO score, errors, warnings and rich-results readiness.

Organization Schema Generator

Generate Organization JSON-LD with logo, social profiles and contact for E-E-A-T.

Local Business Schema Generator

Generate Local Business JSON-LD structured data for your business.

AI Search Readiness Checker

Score how ready your site is for ChatGPT, Perplexity and AI Overviews.

llms.txt Generator

Generate a ready-to-use llms.txt file for your website from any URL.

IBAN Validator

Check whether an IBAN is valid, instantly and for free.

FAQ Schema Generator

Generate FAQPage JSON-LD for AI search and structured Q&A data.

Open Graph / Meta Tag Generator

Generate Open Graph and Twitter/X Card meta tags for correct link previews.

Product Schema Generator

Generate Product JSON-LD with price, GTIN and ratings for Google Shopping.

Article & Blog Posting Schema Generator

Generate Article, Blog Posting or NewsArticle JSON-LD for your posts.

Review & Aggregate Rating Schema Generator

Generate Review or Aggregate Rating JSON-LD for star ratings.

Video Schema Generator

Generate VideoObject JSON-LD for video rich results and AI search.

Event Schema Generator

Generate Event JSON-LD for in-person, online and hybrid events.

SERP Snippet Preview

Preview your Google snippet and check title & description pixel width.

Person Schema Generator

Generate Person JSON-LD for authors and experts to strengthen E-E-A-T.

Breadcrumb Schema Generator

Generate BreadcrumbList JSON-LD to show navigation paths in Google results.

Recipe Schema Generator

Generate Recipe JSON-LD with ingredients, steps and times for rich results.

Job Posting Schema Generator

Generate Job Posting JSON-LD to get your job openings into Google for Jobs.

Course Schema Generator

Generate Course JSON-LD for online and in-person courses and e-learning.

Software Application Schema Generator

Generate Software Application JSON-LD for SaaS, web and mobile apps with ratings.

Hreflang Generator

Build valid, reciprocal hreflang tags in HTML, XML sitemap or HTTP header format — free, no account.

Robots.txt Generator

Build and validate a robots.txt with live preview — crawler rules, AI-bot control, sitemap. Free.

Robots.txt Tester

Check and validate a robots.txt: test URL access per crawler, AI-bot status, syntax warnings. Free.

Character Counter — Count Characters Online

Count characters with and without spaces, words and sentences — plus live limits for X, Instagram, SMS and more. Free, in your browser.

Why SchemaValid?

Private by design

Every tool runs 100% client-side. Your data never leaves your browser — there is no server to send it to.

Free, no account

All tools are free to use, with no sign-up, no trial limits and no hidden paywall in front of results.

English & German

Every tool and every guide is fully available in both languages — not machine-translated on the fly.

Structure your data.Get found.