How to use it
- Paste JSON into the input editor.
- Choose Format for indentation or Minify for compact output.
- Review validation feedback, then copy the processed JSON.
JSON Formatter
Format, validate and beautify JSON instantly.
About the JSON Formatter
The JSON Formatter makes compact data easier to read, creates minified output and reports syntax errors before JSON is used in an application.
Validation logic
The browser parses the input with JSON.parse. Valid data is written with JSON.stringify using either four-space indentation or no extra whitespace.
Common errors
Look for missing quotes, trailing commas, unmatched brackets or invalid property names. Formatting changes whitespace only and does not change valid JSON values.
Example
Formatting {"name":"Duviho","tools":27} places each property on an indented line, while Minify returns the compact form.