JSON Tools

JSON Validator

Paste JSON to check whether it is valid. Invalid input shows a detailed parse error with line and column when possible.

Your JSON is processed securely in your browser and is not stored unnecessarily.

How it works

  1. Paste JSON, type in the editor, or upload a file.
  2. Run the tool. Processing stays in your browser whenever possible.
  3. Copy or download the result. Nothing is written to server storage.

FAQ

This tool validates JSON syntax. Use JSON Schema Generator to produce a schema from sample data.

Yes. JSON is parsed in your browser and is not stored on the server.

Related tools

JSON Formatter JSON Viewer JSON Schema Generator All JSON Tools