JSON
Formatter

Format, minify, validate, and explore JSON. All processing runs off the main thread.

Input

Output — Formatted

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What makes JSON, CSV, XML, and YAML different — and when should you use each one?

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Frequently Asked Questions

Paste your minified or unformatted JSON and the formatter indents it with consistent spacing and line breaks. Standard indentation is 2 or 4 spaces, making nested objects and arrays easy to read.

A JSON validator parses the text and reports syntax errors such as missing commas, unmatched brackets, or incorrectly quoted keys. JSON keys must be double-quoted strings and trailing commas are not allowed.

JSONC is JSON with Comments, an extension that allows single-line and multi-line comments. JSONC is not valid standard JSON and is primarily used in configuration files like VS Code settings.

JSON Formatter - Validate, Prettify, and Minify JSON | ToolsCanvas