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JSON Formatter

Validate, prettify, and minify JSON instantly. Paste payloads, fix syntax errors, and copy clean output without leaving the browser.

Great for API payloads, config files, or quick sanity checks during debugging.

ModePretty print
Input chars0
Output chars0
ErrorsClear
Formatted JSON will appear here...

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for humans to read and write, and easy for machines to parse and generate. It has become the de facto standard for data exchange on the web, widely used in APIs and configuration files.

How to Use the JSON Formatter

  1. Paste JSON: Paste your JSON code into the input field.
  2. Format or Minify: Click "Format" to beautify the JSON with proper indentation or "Minify" to compress it into a single line.
  3. Validate: The tool automatically validates your JSON and provides clear error messages if any syntax issues are found.
  4. Copy Output: Copy the formatted or minified JSON with a single click.

Common Use Cases

  • 🔌 API Development: Formatting and debugging API responses.
  • ⚙️ Configuration Files: Writing and validating configuration files for applications.
  • 📦 Data Exchange: Visualizing and understanding data structures from various sources.
  • 🐛 Debugging: Quickly finding and fixing syntax errors in JSON data.
  • 📊 Data Preprocessing: Preparing data for storage or transmission by formatting or minifying it.

Features of This Tool

  • ✅ Instant Validation: Real-time JSON validation to catch errors as you type.
  • 🎨 Pretty Printing: Beautify your JSON with consistent indentation and formatting.
  • 🗜️ Minification: Reduce the size of your JSON data for efficient transmission.
  • 🚫 Clear Error Reporting: Get easy-to-understand error messages to fix issues quickly.
  • 📋 One-Click Copy: Copy the formatted or minified output to your clipboard instantly.
  • 🔒 Client-Side Processing: Your data is safe as all processing is done in your browser.

Tips for Working with JSON

  • 💡 Use the "Format" option to make complex JSON data more readable during development.
  • 💡 Use the "Minify" option to reduce file size for production environments, which can lead to faster load times.
  • 💡 The error messages will guide you to the exact line and character where a syntax issue is located.
  • 💡 This tool works completely offline, so you can use it without an internet connection.