JSON Formatter & Validator

Clean, prettify, and validate your JSON code instantly. The safe way to format data—nothing leaves your browser.

Input JSON
Formatted Result

Why use a JSON Formatter?

JSON (JavaScript Object Notation) is the language of the web, but APIs often return it as a single, messy line of text. This tool helps developers:

Privacy First

Many online formatters send your code to a server. If you are working with sensitive API keys or user data, that is a risk. PixelFellow's JSON Formatter runs locally in your browser. Your data never touches our servers.

Frequently Asked Questions

What is "Minify"?
Minifying removes all unnecessary spaces, indentation, and newlines from the code. This makes the file size smaller and faster to load.
Why does it say "Invalid JSON"?
JSON is strict. You likely missed a closing bracket }, a comma ,, or used single quotes ' instead of double quotes ".
Can I use this for XML or YAML?
No, this tool is specifically optimized for JSON syntax validation.