Paste your JSON below to format, validate, or minify it instantly. Supports nested objects, arrays, and large files. Runs entirely in your browser — your data never leaves your device.
How to use: Paste raw JSON into the text area above. Click Beautify to format with indentation, or Minify to compress. Invalid JSON will show an error message with the line number.
What is JSON? JSON (JavaScript Object Notation) is a lightweight data format used for APIs, configuration files, and data storage. Valid JSON requires double-quoted keys and proper nesting of objects and arrays.