{ } JSON Formatter
Format, validate, and minify JSON. Everything runs in your browser — your data stays private.
Online JSON Formatter, Validator & Minifier
JSON (JavaScript Object Notation) is the standard data format for APIs, config files, and web development. When you're debugging an API response, reading a compressed JSON file, or validating data before sending it to production — this tool handles it instantly without sending your data to any server.
When to use: Debugging REST API responses, pretty-printing minified JSON, validating JSON before deployment, extracting and formatting deeply nested objects.