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JSON Formatter

Format and validate JSON • ✅ Free • ⚡ Instant • 🔒 No Signup

📋 JSON Formatter

Format, validate, minify, and beautify JSON data instantly. Free, secure, 100% browser-based!

Beautify
🗜️
Minify
Validate
🌳
Tree View
Indent:
Sort Keys:
Quote:
📥 Input JSON
📤 Output
❌ Invalid JSON

📖 How to Use

1
Paste JSON

Copy and paste your JSON data into the left input box, or click "Load Sample" to test.

2
Select Mode

Choose Beautify (format), Minify (compress), Validate (check), or Tree View.

3
Customize Options

Set indent size (2/4 spaces or tab), sort keys alphabetically, or select quote type.

4
Process & Use

Click "Process JSON" to transform. Copy output or download as .json file.

✨ Features

Tolsnap JSON Formatter is a powerful, free online tool for developers, data analysts, and anyone working with JSON data. All processing happens in your browser — your data never leaves your device.

  • Beautify/Format — Pretty-print JSON with proper indentation
  • Minify/Compress — Remove whitespace for production use
  • Validate — Check JSON syntax with error details
  • Tree View — Visual hierarchical representation
  • 100% Private — No data sent to any server

💡 About JSON Formatter & Validator

The JSON Formatter & Validator Format, beautify and validate JSON data instantly. Paste your raw JSON and get clean, readable output with proper indentation. Works offline in your browser.

  • ✅ Format & beautify JSON instantly
  • ✅ Validate JSON — catch errors
  • ✅ Minify JSON for production
  • ✅ Free & works offline