JSON Formatter
Format, validate, and minify JSON online for free. Instantly catch syntax errors, apply clean indentation, and minify with one click — no sign-up needed.
{ "id": 1, "name": "CodingAnthem", "tags": [ "fast", "free" ], "active": true, "meta": { "stars": 2400, "license": "MIT" } }
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Frequently asked questions
What is JSON Formatter?+
Format, validate, and transform JSON instantly — no setup, no server.
How do I use JSON Formatter?+
Paste messy JSON to get it properly indented and readable. Syntax errors are shown in plain English so you know exactly what's wrong. Live Valid / Invalid badge updates as you type. Minify to strip whitespace before sending payloads to an API
Is JSON Formatter free?+
Yes, JSON Formatter is completely free. No account or sign-up required, and all processing happens in your browser — nothing is sent to a server.
Is my data safe when I use JSON Formatter?+
Yes. JSON Formatter runs entirely in your browser using JavaScript and Web APIs — your input is never uploaded, transmitted, or stored on any server.