JSON Formatter

A JSON Formatter takes raw or minified JSON text and reformats it with proper indentation and line breaks, making it easy to read and debug. It also validates the JSON syntax and highlights any errors.

Yes. All formatting and validation happens entirely in your browser using JavaScript. Your JSON data is never uploaded to any server, so it stays completely private.

Format (Beautify) adds indentation and line breaks to make JSON human-readable. Minify removes all unnecessary whitespace to produce the smallest possible JSON string, which is ideal for production APIs and storage.

2 spaces is the most common convention and is used by most style guides (Prettier, ESLint). 4 spaces is preferred in some languages like Python. Use whichever matches your project's coding standards.

Yes, but very large files (10 MB+) may be slow because all processing runs in the browser's main thread. For extremely large files, consider using a command-line tool like `jq` instead.