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JSON Schema Validator - Validate JSON Against Schema Online

Validate JSON payloads against JSON Schema specifications with instant error highlighting and compliance reports.

This tool runs in your browser.
JSON data stays in your browser.

How to use

  1. 01Paste JSON data and a JSON Schema.
  2. 02Select Validate.
  3. 03Review any paths that fail validation.

FAQ

Which JSON Schema draft specifications are supported?

The validator supports modern schema drafts including Draft-07, Draft 2019-09, and Draft 2020-12 standards.

Does it display precise error locations on validation failures?

Yes. Failure reports provide full JSON pointer paths, violated schema keywords, and human-friendly diagnostics for fast debugging.

Is my data and schema validated locally?

Yes. The validation engine operates client-side inside browser memory without sending files or payload strings across the internet.