JSON Formatter & Validator

Parse, validate, beautify and minify JSON data. View as a tree or code.

Valid JSON

Best Online JSON Formatter & Validator

JSON (JavaScript Object Notation) is the language of the web. However, reading raw, minified JSON is a nightmare. Our JSON Formatter transforms messy code into a clean, readable structure with proper indentation and colors.

[Image of JSON Code Example]

Why Use a JSON Formatter?

Debugging

Quickly spot syntax errors like missing commas or brackets. Our tool highlights exactly where the issue is.

Beautification

Convert single-line API responses into a structured, hierarchical view that is easy to read and understand.

Common JSON Errors

  • Trailing Commas: JSON does not allow a comma after the last item in an array or object.
  • Quotes: Keys and String values must be enclosed in double quotes ("), not single quotes (').
  • Data Types: JSON supports Strings, Numbers, Booleans, Arrays, Objects, and Null. Undefined or Functions are not allowed.

Features Checklist

  1. Validator: Checks if your code follows the strict JSON standard (RFC 8259).
  2. Minifier: Removes all whitespace to reduce file size for production use.
  3. Tree View: Allows you to collapse and expand nested objects to focus on specific data.
  4. File Support: Upload `.json` files directly from your computer instead of copy-pasting massive logs.
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