JSON Formatter & Validator

How to Use the JSON Formatter

1. Paste or type your JSON into the input box.
2. Click Format / Beautify to pretty-print with 2-space indentation.
3. Use Format (Tabs) if you prefer tab indentation.
4. Click Minify to compress JSON into one line (great for API payloads).
5. Click Validate to check your JSON for syntax errors.

Why Use This Tool?

Working with APIs means working with JSON constantly. This formatter runs 100% in your browser — your data is never uploaded to a server, which makes it ideal for sensitive payloads. Unlike many online formatters, there are no size limits and no ads.