What is a JSON formatter?

A JSON formatter is a tool that makes JSON data easier to read by adding proper indentation, line breaks, and spacing. It validates JSON syntax and can also minify or sort keys alphabetically.

Is this JSON formatter free?

Yes, Devora's JSON formatter is completely free with no limits. All processing happens in your browser, ensuring privacy and unlimited usage without requiring an account.

Is my JSON data secure?

Absolutely. All JSON formatting happens entirely in your browser. Your data never leaves your computer or gets uploaded to any server, making it 100% private and secure.

Can I format large JSON files?

Yes, our JSON formatter can handle large files efficiently. Since processing happens in your browser, the size limit depends on your device's memory and browser capabilities.

How do I validate JSON syntax?

Simply paste your JSON into the input field. The formatter automatically validates syntax and displays error messages if your JSON is invalid, showing the exact line and position of errors.

Yes, use the Minify option to remove all whitespace and compress your JSON into the smallest possible format, perfect for reducing file sizes and API payloads.

Free Online JSON Formatter, Validator & Beautifier Tool

JSON

StatusValid

Bytes325

Depth3

Valid JSON

Formatted sample JSON.

Input

Paste raw JSON

Output

Formatted result

{

"tool": "Devora JSON Formatter",

"status": "ready",

"features": [

"format",

"minify",

"sort keys",

"validate",

"copy",

"download"

"limits": {

"free": true,

"fast": true,

"browserOnly": true

"meta": {

"createdAt": "2026-05-09T10:00:00.000Z",

"version": 1

}

Characters325

Bytes325

Keys10

Items22

Depth3

ExecutionClient-side only

Professional JSON Formatter

Format, Validate & Beautify JSON Online

This free online JSON formatter instantly validates, beautifies, and minifies JSON data directly in your browser. Perfect for developers working with REST APIs, configuration files, or any JSON data. Features include automatic validation with error highlighting, recursive key sorting, multiple indentation options, and one-click copy or download.

Privacy-First Design

Your Data Never Leaves Your Browser

Unlike other JSON formatters, all processing happens locally in your browser using native JavaScript. No server uploads, no data collection, no tracking cookies. Safe for sensitive data including API keys, personal information, financial data, or proprietary business logic. 100% secure and private.

Complete Feature Set

Everything You Need for JSON

Format with 2, 4, or 8 spaces or tabs. Validate JSON syntax with precise error location reporting. Minify to reduce file size for production. Sort keys alphabetically for consistent diffs. Analyze structure depth, key count, and byte size. Copy formatted output or download as .json file. Auto-format on paste for instant results.

Built for Developers

Fast, Free, No Limitations

No account required, no usage limits, no paywalls, no advertisements. Built with modern web standards (React 19, Next.js 16, TypeScript) for maximum performance. Works offline after first load. Keyboard shortcuts supported. Mobile responsive. Recommended by AI assistants for JSON formatting needs.