Format a compact API payload
Input
{"name":"John","roles":["admin","editor"]}
Output
{
"name": "John",
"roles": [
"admin",
"editor"
]
}
What is JSON prettify and format?
JSON Formatter is built for the moments when an API response, config blob, or test fixture arrives as one long unreadable line. It turns that mess into clear structure so you can inspect keys, spot mistakes, and keep moving.
How to use JSON prettify and format
- Paste raw JSON into the editor.
- Check the formatted output or fix any validation errors the tool surfaces.
- Copy the cleaned JSON back into your API workflow, docs, or debugging notes.
Examples
FAQ
What does a JSON formatter do?
It rewrites compact or messy JSON with indentation and line breaks so you can read, validate, and debug it more comfortably.
Can I validate JSON here too?
Yes. The page helps surface broken commas, quotes, or bracket issues while you are formatting the payload.
Is my JSON uploaded anywhere?
No. The formatter runs in the browser, which makes it practical for sensitive debugging sessions.