Free JSON Formatter
Format, validate and minify JSON instantly.
Loading tool…
About the JSON Formatter
Free JSON formatter and validator. Beautify messy JSON, minify it, and catch syntax errors with clear messages. Runs locally — your data stays private.
How it works
- 1
Paste JSON
Drop in raw or minified JSON.
- 2
Choose indent
Pick 2 spaces, 4 spaces or minify.
- 3
Copy result
Copy the formatted output.
Frequently asked questions
Yes. Invalid JSON is reported with a clear error message so you can fix it quickly.
Yes — switch to minify mode to produce compact single-line JSON.