Overview
The JSON Formatter validates, formats, and minifies JSON data. It features syntax highlighting, configurable indentation, and displays structural statistics including key count, array count, and nesting depth — making it an essential tool for developers working with APIs and data files.
How to Use
Paste raw JSON into the input area — it will validate and format automatically. Use the Format button to beautify with indentation, or Minify to compress it for production use. Choose between 2-space, 4-space, or tab indentation. Syntax errors are highlighted with a descriptive error message. Stats show the number of keys, arrays, and maximum depth.
Background & Context
JSON (JavaScript Object Notation) was popularized by Douglas Crockford in the early 2000s as a lightweight alternative to XML for data interchange. Despite the name, JSON is now language-agnostic and used in virtually every programming language. The vast majority of modern REST APIs return JSON responses. Valid JSON must use double quotes for strings and has no support for comments.
