JSON Formatter & Beautifier
Format, beautify, validate, and parse raw unformatted JSON strings into clean, human-readable structure instantly.
What is JSON Formatter?
A JSON Formatter (also called a JSON Beautifier) is a lightweight web tool that converts dense, compressed, or minified JSON (JavaScript Object Notation) data into a properly indented and formatted structure.
APIs and web services often return compact or minified JSON to optimize performance, which is difficult to read. The formatter adds spaces, tabs, and line breaks to make the code readable and easier to debug.
How to format JSON?
Paste Raw JSON
Paste your unformatted or minified JSON code into the left-side input box.
Click 'Format JSON'
Click Format JSON. The tool automatically checks syntax and applies indentation.
Copy Output
Use the Copy button to save the formatted code from the right-side box directly to your clipboard.
JSON Formatter vs JSON Validator
| Feature | JSON Formatter | JSON Validator |
|---|---|---|
| Primary Purpose | Improve code readability and visual structure. | Strictly verify JSON syntax rules. |
| Primary Action | Add spaces, indentation, and line breaks. | Show the exact position of missing brackets, quotes, or invalid characters. |
| Output Format | Beautified multi-line readable JSON. | A pass/fail status message and line-by-line error log. |
Common JSON Errors
JSON parsing failures often result from these small syntax mistakes:
Trailing Commas
An extra comma after the final array or object element is invalid.{"a": 1, "b": 2,} Remove last comma.
Single Quotes Usage
The JSON standard allows only double quotes (`"`), not single quotes (`'`).{'name': 'John'} Use
{"name": "John"}
Unquoted Keys
JSON object keys must be wrapped in quotes.{name: "John"} Use
{"name": "John"}