⭐ Starlight Tools / JSON Formatter & Validator

JSON Formatter & Validator

Pretty-print, minify, and validate your JSON data.

Result:

About JSON Formatter & Validator

A **JSON Formatter & Validator** is an essential tool for developers and anyone working with JSON (JavaScript Object Notation) data. It allows you to:

  • **Pretty Print:** Organize your JSON data with proper indentation and line breaks, making it easy to read and understand complex structures. You can choose between 2 or 4 space indentation.
  • **Minify:** Remove all unnecessary whitespace, line breaks, and indentation from your JSON, reducing its file size. This is useful for optimizing data transmission over networks.
  • **Validate:** Check your JSON for syntax errors and structural issues, ensuring it adheres to the official JSON standard. This helps prevent parsing errors in your applications.

Why Use This Tool?

  • Readability: Complex or minified JSON can be difficult to interpret. Pretty-printing makes it human-readable, aiding in debugging and data analysis.
  • Error Detection: Quickly identify and pinpoint syntax errors, such as missing commas, brackets, or incorrect quotes, saving you valuable debugging time.
  • Efficiency: Minify JSON for production environments to reduce bandwidth usage and improve application performance.
  • Privacy-Focused: This tool operates entirely within your browser. **No data is sent to any server**, ensuring your JSON data remains private and secure.

How It Works

This JSON Formatter & Validator leverages JavaScript's built-in `JSON.parse()` and `JSON.stringify()` methods.

  • For **pretty-printing** and **minifying**, the tool first attempts to parse the input string into a JavaScript object using `JSON.parse()`. If successful, it then converts the object back into a JSON string using `JSON.stringify()`, specifying the desired indentation (for pretty-printing) or no indentation (for minifying).
  • For **validation**, `JSON.parse()` is used. If the parsing is successful, the JSON is considered valid. If `JSON.parse()` throws a `SyntaxError`, the input is invalid, and the error message is displayed to help you identify the problem.