Online JSON Formatter, Validator & Tree Viewer

Validate, format, prettify, and minify JSON data with immediate syntax error diagnostics.

Input JSON

Formatted Output

Why Use Our Online JSON Formatter?

JSON (JavaScript Object Notation) is the standard data interchange format for modern REST and GraphQL APIs. Our JSON Formatter instantly parses your payload, detects syntax errors (like trailing commas or missing quotes), and formats it into clean, 2-space indented hierarchy.