Pretty-printing transforms dense, single-line JSON into a structured format that humans can actually read. This tool gives you control over indentation style, letting you choose between two spaces, four spaces, or tab characters depending on your project conventions. It handles deeply nested objects and large arrays gracefully, producing consistently formatted output that is easy to scan during code reviews or debugging sessions.
Format, minify, and validate JSON — instantly, in your browser.
Your tidy JSON shows up here
Paste some JSON on the left and hit Format. We'll pretty-print and color-code it for you.
All processing happens entirely in your browser — no data is ever sent to a server.