Free Online JSON Formatter, Validator & Editor

Professional JSON formatter and validator with instant beautification, syntax highlighting, and error detection. Format, validate, minify, and convert JSON to XML, YAML, CSV. Works on all devices with privacy-first local processing.

Input JSON
0 characters
📁 Drop JSON file here
Ready Size: 0 bytes
Output
0 characters
Waiting for input Size: 0 bytes
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Format & Beautify
Instantly format and beautify your JSON with proper indentation and syntax highlighting.
🔍
Validate & Debug
Validate JSON syntax and get detailed error messages with line numbers for debugging.
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Convert Formats
Convert JSON to XML, YAML, CSV and other formats with a single click.
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Mobile Friendly
Responsive design that works perfectly on desktop, tablet, and mobile devices.
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Privacy First
All processing happens locally in your browser. No data is sent to servers.
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Lightning Fast
Optimized performance for handling large JSON files with instant processing.

About JSON Formatter & Validator

Our free online JSON formatter and validator is the perfect tool for developers, data analysts, and anyone working with JSON data. Whether you need to format messy JSON, validate syntax errors, or convert JSON to other formats, our tool provides instant results with professional-grade features.

Key Features

  • JSON Formatting: Instantly beautify and format JSON with proper indentation
  • JSON Validation: Detect and fix syntax errors with detailed error messages
  • JSON Minification: Compress JSON by removing unnecessary whitespace
  • Format Conversion: Convert JSON to XML, YAML, and CSV formats
  • Syntax Highlighting: Color-coded JSON for better readability
  • Privacy Protection: All processing happens locally in your browser

How to Use JSON Formatter

  1. Paste your JSON data into the input editor
  2. Click "Format" to beautify your JSON with proper indentation
  3. Use "Validate" to check for syntax errors
  4. Click "Minify" to compress your JSON data
  5. Select conversion options to transform JSON to other formats

Why Choose Our JSON Tool?

Unlike other JSON formatters, our tool offers advanced features like real-time validation, multiple export formats, and complete privacy protection. All JSON processing happens locally in your browser, ensuring your sensitive data never leaves your device. The tool works perfectly on desktop, tablet, and mobile devices.