JSON Formatter
Format, minify, and validate JSON with syntax highlighting. Press Ctrl+Enter to run.
Input JSON
Output
Format, minify, and validate JSON with syntax highlighting. Press Ctrl+Enter to run.
A JSON Formatter takes raw, compact, or malformed JSON text and outputs it with consistent indentation, sorted keys, and syntax highlighting. Well-formatted JSON is vastly easier to read, debug, and share. This tool also validates your JSON against the ECMA-404 specification and highlights any parse errors with their exact position.
Minified API responses are compact for transmission but unreadable for humans. Proper indentation reveals the data hierarchy instantly — nested objects, arrays, and value types become visually obvious without scanning brackets manually.
Valid JSON requires double-quoted strings, no trailing commas, no comments, and specific literal values (true, false, null). This tool pinpoints the exact line and character where a syntax error occurs.
The collapsible tree view renders your JSON as an interactive hierarchy — click any node to expand or collapse it. Ideal for exploring deeply nested API responses or configuration files without scrolling.
The minify mode strips all whitespace, producing the most compact valid JSON representation. Use this before embedding JSON in source code, sending API payloads, or storing in databases where size matters.