JSON schema validator

Check JSON against a JSON Schema (draft 4 to 2020-12) and list every error.

JSON data
JSON Schema
  • Runs on your device. Files are never uploaded.
  • Free and unlimited. No sign-up, no watermark.
1

Add your file

Choose or drop it in. It opens right here in your browser.

2

Pick the settings

Or keep the defaults, which suit most files.

3

Download

Your file is made on your own device, then saved like any download.

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