Can it validate JSON?

Yes. Invalid JSON shows a clear error so you can fix it quickly.

Yes. Switch to minify for compact payloads and logs.

Is JSON Formatter free?

Yes. Format and validate JSON online free.

Free JSON formatter and validator. Beautify, minify, and fix JSON online instantly in your browser.

Developer

Runs entirely in your browser — files stay on your device.

Indent

Paste or edit JSON

{
  "name": "Korisa",
  "tools": ["json", "jwt", "uuid"],
  "fast": true,
  "meta": {
    "version": 1,
    "private": true
  }
}

Formatted · indent 2 · text view

{
  "name": "Korisa",
  "tools": [
    "json",
    "jwt",
    "uuid"
  ],
  "fast": true,
  "meta": {
    "version": 1,
    "private": true
  }
}

Pretty-print, validate, and minify JSON for APIs, configs, and debugging. Catch syntax errors before they hit production.

Formatting is instant and private — paste JSON and format without sending data to a server.

Can it validate JSON?: Yes. Invalid JSON shows a clear error so you can fix it quickly.
Can I minify JSON?: Yes. Switch to minify for compact payloads and logs.
Is JSON Formatter free?: Yes. Format and validate JSON online free.