Processed locally in your browser

JSON Schema Validator

Validate JSON data against Draft-07 or Draft 2020-12 schemas locally.

Send feedback

Tell us what worked, what did not, or what could be better.

Sends this feedback, this page, and language to the ToolHub inbox. Tool input is never included.

About

Validate JSON with Ajv in the browser and inspect every failing data path and schema rule.

Key Features

  • Draft-07 and 2020-12
  • Standard format validation
  • All errors in one result
  • No server upload

How to use

  1. 1Select the schema draft.
  2. 2Paste the schema and JSON data.
  3. 3Validate and inspect each reported path.

Example

Input

Schema: {"type":"string","minLength":3}
Data: "AI"

Output

/ — minLength — must NOT have fewer than 3 characters

Limitations

  • Each input is limited to 2,000,000 characters.
  • Only local # references are supported; external $ref URLs and files are rejected.
  • Draft-specific keywords must match the selected draft.

Last reviewed:

Related Tools

JSON to JSON Schema
JSON to Zod
JSON to TypeScript
JSON Formatter