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How to Format and Validate JSON Data

March 8, 2026 4 min read

Messy JSON data can be hard to read and debug. Proper formatting makes it instantly readable and helps you spot errors.

What is JSON formatting?

JSON formatting (or beautifying) adds proper indentation and line breaks to compressed JSON. For example, raw JSON like {"name":"John","age":30} becomes neatly indented with each key on its own line.

How to format JSON with TechSixtus

  1. Open the **JSON Formatter** tool
  2. Paste your raw JSON into the input box
  3. Choose Beautify or Minify mode
  4. Copy the formatted output

Beautify vs Minify

Beautify adds indentation and line breaks — great for reading and debugging. Minify removes all whitespace — ideal for production code where file size matters.

Validating JSON

Our formatter also validates your JSON. If there's a syntax error — a missing comma, unclosed bracket, or invalid value — it will highlight exactly where the problem is.

Common JSON errors

  • Missing commas between key-value pairs
  • Trailing commas after the last item
  • Single quotes instead of double quotes
  • Unquoted property names

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