How do I format and beautify minified JSON online?

Upload or paste your JSON above. The JSON formatter parses the raw input and re-serialises it with 2-space indentation, sorted alphabetically where possible, and consistent bracket placement. The beautified output is ready to copy or download instantly.

Does the JSON formatter validate the JSON and detect syntax errors?

Yes. If the input is invalid JSON, the formatter reports a parse error with a description of what went wrong, so you can quickly identify and fix issues like missing commas, unclosed brackets, or unquoted property names.

Can I use the JSON formatter to pretty-print an API response?

Absolutely. Copy the raw JSON response from your browser's DevTools Network tab, cURL, or Postman, paste it into the tool, and get an indented, readable output in seconds. This is one of the most common workflows for developers debugging REST APIs.

What indentation does the JSON formatter use?

The formatter uses 2-space indentation, which is the most widely used convention in JavaScript and Node.js projects. The output is identical to what JSON.stringify(data, null, 2) produces in JavaScript.

Is the online JSON formatter free and private?

Yes — free, no login, and fully private. Your JSON data never leaves your browser. This makes it safe to paste API keys, authentication tokens, or other sensitive JSON payloads for inspection.

JSON format

JSON Formatter

Beautify and format JSON files with proper indentation. Validate and clean your JSON instantly.

Your files are processed locally and never uploaded to our servers.

How it works

1
Upload your file
Drop your file or click to browse. No size limit.
2
Convert instantly
Processed in your browser — nothing is uploaded to any server.
3
Download the result
Your converted file is ready in seconds.

Frequently Asked Questions

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