JSON Formatter & Validator
Pretty-print, minify and validate JSON text in your browser. JSON Formatter & Validator is free, needs no login or signup, and your text is processed on your own device — it is never uploaded.
Open JSON Formatter & Validator
Key features
- Pretty-prints messy JSON into clean, readable formatting.
- Minifies JSON to remove extra spacing when you need it compact.
- Checks whether your JSON is valid, so you can spot mistakes.
- Free to use, with no login or signup — your text stays in your browser.
How to use
- Open the JSON Formatter & Validator tool.
- Paste or type your JSON text.
- Run format, minify or validate.
- Copy the result to use wherever you need it.
Frequently asked questions
Do I need an account to format JSON?
No. The tool is free and needs no login or signup.
Is my JSON uploaded or stored?
No. Your text is processed in your browser on your own device, and it is never uploaded to or stored by the site.
What happens if my JSON is invalid?
The tool checks your JSON and lets you know when it is not valid, so you can fix it and try again.