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.

JSON Formatter

Format, validate, and minify JSON in your browser. Free private JSON formatter — no upload and no signup.

Runs in your browser. Files stay on this device.

Valid JSON· Formatted · 2 spaces

Input

Paste or edit JSON

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

Valid JSON

Output

Formatted · indent 2 · text view

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

156 chars · indent 2