JSON Formatter / Validator

Pretty-print and validate JSON data online

What is a JSON Formatter / Validator?

JSON Formatter / Validator is a free online tool that lets you instantly pretty-print and validate JSON data. Whether you're debugging APIs, formatting data, or learning JSON, this tool makes it fast and easy. It's perfect for developers, testers, and anyone working with JSON files.

Why use this JSON Tool?

  • Format and validate JSON instantly
  • See errors and structure at a glance
  • Great for debugging, development, and data exchange
  • Mobile-friendly and privacy-focused

How to use the JSON Formatter / Validator

  1. Paste your JSON in the input area.
  2. Click Format & Validate to see the result.
  3. Copy the formatted JSON as needed.

Frequently Asked Questions

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data-interchange format, easy for humans to read and write, and easy for machines to parse and generate.

Is this tool free and private?

Yes! All formatting and validation happens in your browser. No data is sent to any server.

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