JSON Formatter & Prettifier

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JSON Formatter & Prettifier Tool

Our JSON formatter and prettifier transforms messy, minified JSON into a clean, readable format. Whether you need to make JSON pretty for debugging, documentation, or development, our JSON prettier tool helps you format and validate JSON data instantly. This free online JSON prettify tool supports all JSON data types and structures.

How Our JSON Formatter Works

Our JSON formatter performs several operations to make your JSON data more readable:

1. Validation: First, it checks if your JSON is valid by attempting to parse it using JavaScript's built-in JSON.parse() function.
2. Formatting: If the JSON is valid, it's then formatted with proper indentation using JSON.stringify(data, null, 2), where '2' represents the number of spaces for each indentation level.
3. Syntax Highlighting: The formatted JSON is then processed to add syntax highlighting, making it easier to distinguish between different elements:
   • Strings are highlighted in orange
   • Numbers are highlighted in light green
   • Booleans and null values are highlighted in blue
   • Keys are highlighted in light blue

Tips for Using the Formatter

- Double-click the input area to load an example JSON
- Paste your JSON data and click "Format JSON" to beautify it
- If you receive an error, check for common issues like missing quotes or commas