JSON Formatter & Validator
Paste your JSON to format, beautify, validate, or minify it instantly.
Input JSON
Output
Paste your JSON to format, beautify, validate, or minify it instantly.
This JSON formatter lets you beautify, minify, and validate JSON data instantly in your browser. Paste minified JSON and get properly indented, readable output — or compress formatted JSON into a single line for production use.
Format with 2 spaces, 4 spaces, or tabs. Minify JSON into a single line. Automatic validation — errors are highlighted with line numbers. Everything runs client-side, so your data stays private.
JSON (JavaScript Object Notation) is a lightweight data format used for storing and exchanging data. It's the most common format for APIs, configuration files, and data storage. JSON uses key-value pairs and supports strings, numbers, booleans, arrays, objects, and null values.