JSON Formatter & Validator

JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for humans to read and write, and easy for machines to parse and generate. It has become the de facto standard for data exchange in web APIs, configuration files, and modern applications.

JSON Formatter / Beautifier

The formatter takes compressed or poorly formatted JSON and adds proper indentation (2 spaces), line breaks, and spacing to make it human-readable. This is essential when inspecting API responses, debugging webhooks, or reviewing configuration files.

JSON Minifier

The minifier removes all unnecessary whitespace, line breaks, and indentation from JSON data, producing the most compact representation. This is useful for reducing payload size in API requests, storing JSON in databases, or optimizing network transfer.

JSON Validator with Error Line Numbers

The validator parses your JSON input and reports whether it is valid or invalid. When errors are found, it displays the error message with context about where the issue occurred, helping you quickly locate and fix syntax problems like missing commas, unmatched brackets, or trailing commas.

Syntax Highlighting & Tree View

The syntax-highlighted view color-codes keys, strings, numbers, booleans, and null values for easy visual parsing. The tree view presents your JSON as a collapsible hierarchical structure, making it easy to navigate deeply nested data.

100% Client-Side Processing

This JSON formatter runs entirely in your browser using JavaScript's native JSON.parse() and JSON.stringify(). No data is transmitted to any server. Your JSON never leaves your device, making it safe to format sensitive configuration files, API responses containing credentials, and private data.