JSON Formatter & Validator
Paste JSON to check its syntax, format it with indentation, or minify it for compact output. Nothing is sent to a server.
How to use
- Paste a JSON object or array.
- Select Format for readable indentation or Minify for compact text.
- If the input is invalid, correct the reported syntax error and try again.
About this tool
Paste JSON to check its syntax, format it with indentation, or minify it for compact output. Nothing is sent to a server.
Frequently asked questions
Does this tool change my JSON data?
Formatting changes whitespace only. Minification removes unnecessary whitespace; the parsed values stay the same.
When should I use it?
Use this free tool when you need a quick, repeatable result without installing software. Check important results before using them in production work.