Free Online JSON Formatter
Paste raw or minified JSON to instantly format it with proper indentation, or minify it for production. Errors are highlighted so you can fix them fast.
Input JSON
Output
What is a JSON Formatter?
A JSON formatter (also called a JSON beautifier or pretty-printer) takes compact or poorly indented JSON and reformats it with consistent indentation and line breaks, making it easy to read and debug.
Our formatter also validates your JSON as it processes it, surfacing syntax errors with a clear message so you can pinpoint and fix issues quickly. Everything runs in your browser — no data is ever sent to a server.
How to Use the JSON Formatter
- Paste your JSON into the Input field on the left.
- Choose a mode: Format to beautify with 2 or 4 spaces, or Minify to strip all whitespace.
- Click the button to process. Any syntax errors are shown below the input.
- Copy the result with the Copy button and paste it wherever you need it.
Common Use Cases
- API debugging: Paste raw API responses to quickly scan the structure.
- Config file formatting: Keep your JSON config files readable and consistently indented.
- JSON validation: Instantly catch missing brackets, trailing commas, and other syntax mistakes.
- Production minification: Shrink JSON payloads before embedding them in source code or sending over the wire.