Schema Validator

Schema Validator delivers exactly what its name promises, validate & generate JSON-LD structured data, audit any URL's schema against Google Rich-Results rules, edit it live, or build new markup for 15+ types with a readiness score, fast and free. Because it belongs to ToolsMonk's seo tools collection, the whole workflow happens on a single page instead of being spread across separate apps or websites.

Common scenarios include auditing all structured data on a live page before or after deploying, fixing invalid json-ld by editing it live against instant validation, and building new article, product, faq, howto, event or localbusiness markup with correct nesting. The browser-based design means you can switch devices mid-task and pick up right where you left off, whether it's a one-time job or part of a daily workflow.

Everything about Schema Validator is tuned for speed to first result, with privacy-friendly processing and the rest of ToolsMonk's tools nearby when the next task comes up.

Structured data is the part of a page search engines read without rendering it, and a single missing required field can quietly cost a page its rich result. Schema Validator gives you three starting points in one workbench: audit the JSON-LD on a live URL, paste markup you already have, or build new markup from typed forms for more than fifteen schema types.

Every block is scored from 0 to 100 against Google's required and recommended fields, with a verdict per block rather than one number for the page. Errors come first because they block eligibility outright; warnings come second because they weaken a result that is otherwise allowed. Pages that use an @graph or several separate blocks are read block by block, and each type links to its schema.org reference so you can check a property name instead of guessing it.

Editing is two-way. Change a field in the form and the raw JSON-LD updates; edit the raw JSON-LD and the form and score update. That makes it practical for fixing someone else's broken markup as well as writing your own, and the most common failures, hand-written offers, ratings and addresses, are exactly the nested objects the builder writes correctly for you.

A good routine is: audit the live page, fix errors, clear warnings, copy the corrected script tag, deploy, then confirm with the Rich Results Test link the tool provides. Remember that valid markup makes a page eligible for a rich result, it does not guarantee one; Google decides per query. And markup must describe what is visibly on the page, or it risks the opposite of what you wanted.