JSON Formatter

JSON Formatter is a fast, browser-based tool for formatting and validating JSON data. Paste raw or minified JSON and get a clean, indented, human-readable output instantly — no uploads, no server round-trips. Perfect for developers debugging API responses, validating configuration files, or cleaning up minified data. The tool highlights syntax errors with precise line and column numbers so you can fix issues immediately. Features include: pretty-print with customizable indentation, minify to strip whitespace, syntax highlighting, error detection with helpful messages, and copy-to-clipboard with one click. All processing happens in your browser — your data never leaves your device.