devLocal developer utility
JSON Formatter and Validator
Beautify, minify, and strictly validate JSON locally with useful errors. Your input stays in your browser while you work.
JSON Formatter & Validator🔒 Processed locally
How to use JSON Formatter & Validator
Complete the labeled fields above, choose an action, and inspect the result before copying or downloading it.
Processing runs locally in this browser. No input is uploaded or sent to a conversion service.
Inputs
- JSON document: {"name":"Dev","age":30}
Related tools
- JSON Stringify — Encode JSON as a quoted JSON string.
- String to JSON — Decode a JSON string containing a JSON document.
- JSON Sort Keys — Sort object keys recursively while preserving array order.
- JSON Flatten — Flatten JSON into unambiguous JSON Pointer paths.