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JSON Formatter & Validator

Format, validate, and beautify your JSON data instantly in your browser. Our tool ensures your JSON is perfectly structured and highlights any syntax errors immediately.

Format JSONValidate JSONMinify JSON

Input JSON

Output JSON

How to use this tool

  1. Paste your raw or minified JSON text into the input panel on the left.
  2. Any syntax errors will be highlighted immediately.
  3. Click the 'Format' button to beautify the JSON, or the 'Minify' button to strip all whitespace.
  4. Use the copy button to grab the formatted output.

Examples

Minified to Formatted

Input

{"name":"John","age":30,"city":"New York"}

Output

{
  "name": "John",
  "age": 30,
  "city": "New York"
}

How to use JSON Formatter

Open the tool, paste or upload your input, choose any options, and copy or download the output.

  1. Provide input (text, code, or a file) in the tool UI.
  2. Adjust settings (if available) to match your needs.
  3. Click the action button (or type) to generate the result.
  4. Copy or download the output.

How JSON Formatter works

This tool runs entirely in your browser. It processes your input locally using client-side JavaScript and generates an output you can copy or download.

No accounts, no uploads, and no server-side processing are required.

Benefits of this tool

Instant Rendering

Processes JSON directly in your browser without lag.

Syntax Highlighting

Easily spot keys, strings, and numbers with color coding.

Error Detection

Instantly notifies you of malformed JSON structures.

Key Features

  • 1-click indentation
  • MinifyJSON support
  • Syntax validation
  • Local processing

Secure & Private

All processing happens securely. For local tools, your files and data never leave your device, ensuring maximum privacy and security.

Frequently Asked Questions

Is my JSON data uploaded to your servers?
No. All formatting and validation happens strictly within your browser. Your data never leaves your device.
Can it handle large JSON files?
Yes, it can seamlessly format large JSON structures up to several megabytes, limited only by your browser's memory.

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Privacy Notice

All processing happens inside your browser. No files or data are uploaded to our servers, ensuring your privacy is strongly protected.