JSON Formatter

How to Use JSON Formatter

Paste your raw JSON into the textarea, then choose what you'd like to do with it using the three action buttons. Click 'Format' to beautify the JSON with proper indentation and line breaks, making deeply nested objects and arrays easy to read at a glance. Click 'Minify' if you need the opposite — a compact, whitespace-free version ideal for reducing payload size before sending it over a network or embedding it in code. Click 'Validate' to check whether your JSON is syntactically correct without changing its formatting; if there's a problem, the tool shows a clear error message describing exactly what's wrong and roughly where the issue is, rather than a cryptic parser error. Formatted output includes syntax highlighting that color-codes keys, string values, numbers, booleans, and null values, along with line numbers down the side so you can reference a specific location when discussing the JSON with a teammate. Once you're happy with the result, use the copy button to grab the formatted text instantly, or use the download button to save it as a standalone .json file. Everything runs through the browser's built-in JSON.parse and JSON.stringify functions combined with a custom highlighter, so no JSON content — including anything sensitive like API keys or user data — is ever sent to a server.