How to format, beautify and validate JSON
Minified or messy JSON is hard to read and debug. Formatting (beautifying) adds consistent indentation and line breaks so the structure is clear, and validation flags syntax errors.
Open the JSON FormatterStep by step
- 1
Open the JSON Formatter
Open the JSON Formatter tool.
- 2
Paste your JSON
Paste the raw or minified JSON into the input box.
- 3
Format it
The tool indents and beautifies the JSON and highlights any syntax errors.
- 4
Copy the result
Copy the clean JSON, or minify it again for production.
Frequently asked questions
Why is my JSON invalid?
Common causes are trailing commas, single quotes instead of double quotes, or missing brackets. The formatter points to where parsing fails.
Does my JSON get sent to a server?
No. Formatting and validation happen in your browser, so sensitive payloads stay local.