FREE TOOL / DEVELOPER TOOLS
JSON Formatter & Validator
Format, minify, and validate JSON while preserving the original numbers.
JSON workspaceYour input stays on this device
How to format JSON
- Paste valid JSON into the input box.
- Choose an indentation size and select Format JSON, or use Minify.
- Copy or download the result.
Private by design
Formatting and validation happen in your browser. Your JSON is not uploaded. Original number and string representations are retained, including large integers.