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JSON Formatter & Parser

Free online JSON Formatter and Parser tool for developers, data analysts, and anyone working with JSON data. Instantly beautify, validate, parse, and explore your JSON with privacy-first, client-side processing. No data ever leaves your browser.

How to Use the JSON Formatter

1. Formatter Mode

Paste or type your JSON in the input panel. Choose indentation (2, 3, or 4 spaces) and click Format to beautify or Minify to compress your JSON.

2. Parser Mode

Switch to Parser mode to explore your JSON data interactively. Expand/collapse nodes, search through the structure, and copy specific values.

3. Validation

The tool automatically validates your JSON syntax and highlights any errors. Invalid JSON will show clear error messages to help you fix issues.

4. Export Options

Copy formatted JSON to clipboard, download as a file, or use the built-in features to share your processed JSON data.

JSON Data Types

Primitive Types

String'hello world'

Number42, 3.14

Booleantrue, false

Nullnull

Complex Types

Object

{key: value}

Array

[item1, item2, ...]

Common JSON Examples

{name: 'John', age: 30}

Simple object

[1, 2, 3, 4, 5]

Number array

{users: [{name: 'Alice'}]}

Nested structure

{config: {enabled: true}}

Configuration object

{data: null, error: false}

API response

{items: [], total: 0}

Empty collection

Advanced Features

JSON Beautifier

Format messy JSON with proper indentation and spacing for readability.

JSON Minifier

Compress JSON by removing unnecessary whitespace for smaller file sizes.

Syntax Validation

Automatic validation with error highlighting and helpful error messages.

Interactive Parser

Explore JSON data with expandable tree view and search functionality.

Privacy First

100% client-side processing. Your data never leaves your browser.

File Support

Upload JSON files or download formatted results for easy sharing.

Frequently Asked Questions

Is my JSON data safe?

Yes! All processing happens in your browser. We never store, log, or transmit your JSON data. Your privacy is guaranteed.

Can I parse large JSON files?

Yes, the tool handles large and complex JSON structures efficiently. The interactive parser makes it easy to navigate through nested data.

What's the difference between Formatter and Parser modes?

Formatter mode beautifies and validates JSON. Parser mode provides an interactive tree view to explore and understand the structure of your JSON data.

Technical Information

This JSON Formatter uses native JavaScript JSON.parse() and JSON.stringify() methods for maximum compatibility and reliability.

The tool supports all standard JSON data types including objects, arrays, strings, numbers, booleans, and null values. It follows RFC 7159 JSON specification.

All processing is done client-side for maximum privacy and speed. No JSON data is sent to our servers, ensuring your data remains completely private and secure.

Privacy & Security

• All JSON processing is performed locally in your browser

• No data is sent to our servers or stored anywhere

• Your JSON data remains completely private

• No cookies or tracking mechanisms are used

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