100% Client-Side

JSON Schema Validator

Free online JSON Schema validator. Validate JSON data against a JSON Schema with support for types, required fields, patterns, and nested objects. — runs 100% in your browser, client-side only. No data is sent to any server. Free to use, no account required.

Free Client-Side No Login No Storage
Loading tool...
JSON Formatter & Validator Beautify and validate JSON data — with syntax highlighting and error detection JSON Minifier Minify JSON by removing whitespace — reduce payload size JSON to XML Converter Convert JSON data to XML format — browser-based, no server

How to Use the JSON Schema Validator

  1. Paste your JSON Schema on the left.
  2. Paste the JSON data to validate on the right.
  3. Click Validate to check compliance.

Supports type, required, properties, items, minimum/maximum, minLength/maxLength, pattern, and enum validation. All client-side.

What is JSON Schema Validator?

undefined

Common Uses

Frequently Asked Questions