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JSON Formatter

Format, validate and minify JSON data with syntax highlighting.

local-only instant no upload
— Text Tools Online
✎ NOTES ON THIS TOOL

What is a JSON Formatter?

A JSON formatter (also called JSON beautifier or JSON pretty printer) takes compact or unformatted JSON and adds proper indentation and line breaks to make it human-readable. It also validates JSON syntax and highlights errors.

How to Use This Tool

  1. Paste your JSON into the input box.
  2. Click "Format" to pretty-print with proper indentation.
  3. Click "Minify" to remove whitespace for compact output.
  4. Errors are highlighted inline if your JSON is invalid.

What is JSON?

JSON (JavaScript Object Notation) is the standard data interchange format for web APIs, configuration files, and data storage. It represents data as key-value pairs, arrays, strings, numbers, booleans, and null values.

✎ Questions

01 What is the difference between formatting and minifying JSON? +

Formatting adds indentation and line breaks for readability. Minifying removes all whitespace to reduce file size — useful for production APIs and data transfer.

02 Can this tool fix invalid JSON? +

The tool highlights errors so you can fix them manually. It does not auto-correct JSON syntax.