JSON Formatter

Format, validate, and minify JSON data

How to Use the JSON Formatter

Format JSON

Beautify your JSON data with proper indentation and line breaks for better readability.

  1. Paste your minified or unformatted JSON into the text area
  2. Click the "Format" button
  3. Your JSON will be formatted with 2-space indentation

Minify JSON

Remove all unnecessary whitespace to create the smallest possible JSON string.

  1. Paste your formatted JSON into the text area
  2. Click the "Minify" button
  3. Your JSON will be compressed to a single line

Validate JSON

Check if your JSON is valid and identify syntax errors.

  1. Paste your JSON into the text area
  2. Click the "Validate" button
  3. See if your JSON is valid or view error messages

Common JSON Errors

  • Unexpected token: Usually caused by missing or extra commas, quotes, or brackets
  • Unexpected end of JSON: Missing closing brackets or braces
  • Invalid character: Using single quotes instead of double quotes, or unescaped characters
  • Trailing comma: Having a comma after the last item in an object or array

JSON Syntax Rules

  • Data is in name/value pairs
  • Data is separated by commas
  • Curly braces hold objects
  • Square brackets hold arrays
  • String values must use double quotes (not single quotes)
  • No trailing commas allowed

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Frequently Asked Questions

A: JSON (JavaScript Object Notation) is a lightweight data-interchange format that's easy for humans to read and write, and easy for machines to parse and generate. It's commonly used in web APIs and configuration files.
A: Minifying JSON removes all unnecessary whitespace, making the file smaller. This reduces bandwidth usage and improves loading times when transmitting data over networks.
A: Yes! The formatter handles nested objects and arrays of any depth, properly indenting each level for maximum readability.
A: Yes, absolutely! All JSON processing happens entirely in your browser. Your data never leaves your device and is not sent to any server.
A: Validating checks if your JSON syntax is correct without changing it. Formatting reorganizes valid JSON to make it more readable. Both will show error messages if the JSON is invalid.
A: Yes, but very large files (several MB) may take a moment to process depending on your device's performance.