JSON Formatter & Beautifier
Format and beautify JSON instantly with our free online JSON formatter.
All conversions happen in your browser. No data is sent to our servers. Press Cmd/Ctrl + Enter to convert.
How to Format JSON Online
Paste your JSON into the input panel and click Convert. The formatter parses your data and outputs it with clean 2-space indentation and proper line breaks. Copy the result with one click.
Why Format JSON?
Minified or hand-written JSON is hard to read and debug. Formatting (also called beautifying or pretty-printing) adds consistent indentation so you can scan structure, spot errors, and review API responses quickly.
Format vs. Minify
Formatting expands JSON for readability; minifying strips whitespace to shrink file size for production. Use the JSON Minify tool when you need the smallest possible payload.
Frequently Asked Questions
What does the JSON formatter do?
It parses your JSON and re-prints it with consistent 2-space indentation and line breaks, making messy or minified JSON easy to read. Invalid JSON is reported with the exact parser error.
Is my JSON data secure?
Yes. All formatting happens directly in your browser using JavaScript. Your JSON is never uploaded or sent to any server.
Can it format minified or single-line JSON?
Absolutely. Paste any valid JSON — minified, single-line, or already formatted — and the formatter will produce clean, indented output.
What if my JSON is invalid?
The formatter shows the parser's error message so you can find and fix the problem. Use the JSON Validator for a friendly summary of what's valid or broken.