markdown# JSON Formatter & Validator

Beautify, validate, and compress JSON data with ease. Perfect for developers working with APIs, configuration files, or data analysis.

Features

JSON Validation

Instantly validates your JSON syntax and provides detailed error messages with line numbers if issues are detected. Perfect for debugging malformed JSON data.

Beautify Mode

Transforms compressed JSON into a readable format with proper indentation, making it easy to understand complex data structures. Ideal for code reviews and documentation.

Minify Mode

Removes all unnecessary whitespace and formatting to create the smallest possible JSON representation. Perfect for optimizing API payloads and reducing file sizes.

Bulk Processing ⭐ PRO

Upload CSV files containing multiple JSON entries and process them all at once. Export results in CSV or JSON format. Maximum 1000 rows for Pro users.

JSON Statistics ⭐ PRO

Get detailed insights about your JSON structure including: - Original and formatted file sizes - Compression ratio (minify mode) - Nesting depth - Total number of keys - Data structure complexity

History Tracking ⭐ PRO

Access your previously formatted JSON documents for quick reference and comparison. Perfect for tracking changes over time.

Export Options ⭐ PRO

Download formatted results in multiple formats: - Plain text (.txt) - JSON file (.json) - CSV for bulk results

FAQ

Q: What happens if my JSON is invalid?

A: You'll receive a detailed error message indicating the type of syntax error (missing quotes, unclosed brackets, etc.) along with suggestions for fixing the issue.

Q: Can I format JSON that's already formatted?

A: Yes! You can re-format any JSON regardless of its current formatting. Use Minify to compress pretty-printed JSON or Beautify to re-indent minified JSON.

Q: What's the difference between Beautify and Minify?

A: Beautify adds indentation, line breaks, and spacing to make JSON human-readable. Minify removes all unnecessary whitespace to create the smallest possible file size, ideal for transmission or storage.

Q: Is my JSON data stored on the server?

A: For free users, JSON data is processed in real-time and not permanently stored. Pro users have access to history features where formatted JSON is stored securely for 90 days.

Q: What JSON standards are supported?

A: The tool supports JSON as defined by RFC 8259 and ECMA-404 standards, including proper handling of Unicode characters, escaped characters, and nested structures.

Q: Can I use this tool for API responses?

A: Absolutely! This tool is perfect for formatting and validating API responses, making them easier to read and debug during development.

Examples

Example 1: Beautify Compact JSON

Input: {"name":"Mario","age":40,"skills":["plumbing","jumping"],"active":true} Mode: Beautify Output: { "name": "Mario", "age": 40, "skills": [ "plumbing", "jumping" ], "active": true }

Example 2: Minify Pretty JSON

Input: { "user": { "id": 12345, "name": "Sue Johnson" } } Mode: Minify Output: {"user":{"id":12345,"name":"Sue Johnson"}}

Example 3: Validate Invalid JSON

Input: {"name": "test", "value": } Result: Error - Syntax error, malformed JSON (missing value after colon)

CSV Format for Bulk Processing

When using bulk upload, your CSV file should have the following structure:

Header Row: json_input,mode Data Rows: "{""name"":""value""}",pretty "{""id"":123}",minify Notes: - Escape double quotes within JSON by doubling them - Each row represents one JSON formatting operation - Mode should be either "pretty" or "minify" - Maximum 25 rows for free users, 1000 for Pro users

Troubleshooting

Common Issues

Problem: "JSON input is too short" error Solution: Ensure you've entered at least 2 characters of valid JSON Problem: Validation fails with no clear error Solution: Check for: - Missing closing brackets or braces - Unescaped quotes within string values - Trailing commas in arrays or objects - Single quotes instead of double quotes Problem: Bulk upload fails Solution: Verify your CSV: - Has correct headers (json_input, mode) - Uses proper escaping for quotes - Doesn't exceed row limits for your tier - Is saved in UTF-8 encoding Problem: Formatted output looks incorrect Solution: Clear your browser cache and reload the page. Ensure JavaScript is enabled in your browser.

Need More Help?

For technical support or feature requests, contact our support team. Pro users receive priority assistance with 24-hour response times.

Pro Features Summary

Upgrade to unlock these powerful features: - Bulk Processing: Process up to 1000 JSON entries at once - Advanced Statistics: Deep analysis of JSON structure - History Access: 90-day storage of formatted JSON - Priority Support: Fast response times - API Access: Integrate formatting into your workflows - Export Options: Multiple output formats - Higher Limits: Process larger files up to 500KB