Free Online JSON Formatter & Validator

Format, validate, and query JSON with real-time feedback. Features syntax highlighting, JSONPath queries, comprehensive error reporting, and powerful formatting options - all free with no registration required.

Real-time Validation
Syntax Highlighting
Format & Minify
JSONPath Queries
Key Sorting
JSON Statistics

JSON Tools

Ready to process JSON
Indentation
JSONPath Query
Statistics
0
Depth
0
Keys
0
Arrays
0
Objects
Input JSON
Formatted Result

What is JSON Formatting?

JSON (JavaScript Object Notation) formatting involves organizing JSON data in a human-readable structure with proper indentation, line breaks, and spacing. Our JSON formatter automatically validates your JSON syntax, highlights errors, and presents your data in a clean, readable format.

Key Features:

  • Real-time Validation: Instant feedback as you type with detailed error messages
  • Syntax Highlighting: Color-coded JSON elements for better readability
  • Format & Minify: Switch between readable and compact formats
  • JSONPath Queries: Extract specific data using powerful query expressions
  • Key Sorting: Alphabetically organize object properties
  • Comprehensive Statistics: Analyze JSON structure depth, keys, and complexity

Common Use Cases

API Development

Format API responses, validate request payloads, and debug JSON data in REST APIs and web services.

Data Processing

Clean and organize JSON data for databases, analytics, and data migration tasks.

Configuration Files

Format configuration files for applications, validate settings, and ensure proper JSON structure.

Debugging

Identify JSON syntax errors, validate data structures, and troubleshoot parsing issues in applications.

JSONPath Query Examples

$.store.book[*].author

Get all book authors from a store object

$.store.book[?(@.price < 10)]

Find books with price less than 10

$..author

Recursively find all author properties

$.store.book[0,1]

Get first two books from the array

Why Choose ToolShelf JSON Formatter?

100% Private & Secure

All processing happens in your browser. Your JSON data never leaves your device.

Lightning Fast

Real-time processing with instant validation and formatting as you type.

Mobile Friendly

Fully responsive design that works perfectly on phones, tablets, and desktops.

Developer Focused

Built by developers for developers with keyboard shortcuts and power-user features.