JSON Formatter & Validator — Beautify, Minify & Fix
Format, validate, and beautify your JSON data with our powerful JSON Formatter & Validator. The tool offers automatic error correction, alphabetical key sorting, various indentation options, and an intuitive tree view. Additionally, you can minify JSON, escape strings, and use the integrated path extractor to retrieve specific values. All operations are performed client-side for maximum security.
RFC 8259 Client-Side Only
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Features
- Format and beautify JSON with customizable indentation (2 or 4 spaces, tabs)
- Validate JSON syntax with detailed error messages
- Minify JSON to reduce file size
- Tree view for nested structures
- Auto-fix for common mistakes (comments, trailing commas, single quotes)
- Copy formatted result with one click
- JSON path extractor and string escape helpers
- Privacy-focused: all processing happens in your browser
JSON Formatting Options
- Beautify (2 spaces): Standard formatting with 2-space indentation
- Beautify (4 spaces): More readable formatting with 4-space indentation
- Minify: Remove all whitespace to create compact JSON
- Validate: Check JSON syntax without reformatting
Common Use Cases
- API Development: Format API responses for better readability
- Configuration Files: Validate and format JSON config files
- Data Inspection: Quickly examine JSON data structures
- Debugging: Identify syntax errors in JSON data
- Code Review: Ensure consistent JSON formatting
- Data Migration: Validate JSON before importing
Useful Resources
Wikipedia: JSON Beginner-friendly introduction to JSON concepts and usage
ECMA-404: The JSON Data Interchange Syntax Official JSON specification by ECMA International
RFC 8259: The JavaScript Object Notation (JSON) IETF standard for JSON data format
MDN JSON Object Reference Complete guide to JSON.parse() and JSON.stringify()
JSON Schema Specification Official documentation for validating JSON structure and data types