JSON Formatter & Validator

About This Tool

Paste any JSON and instantly format or minify it. Syntax errors are caught with line and column numbers. All processing happens in your browser — nothing is sent to any server.

• Format: Indent your JSON with 2 spaces, 4 spaces, or tabs
• Minify: Strip all whitespace to produce compact JSON
• Validate: Real-time validity indicator as you type

How to Use

1. Paste your JSON into the input area
2. Choose Format or Minify
3. Adjust the indent size if needed
4. Click Copy to copy the result

What is JSON?

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