What Is JSON and When Do You Need a Formatter?

JSON (JavaScript Object Notation) is the most common data format for APIs, config files, and database exports. The problem is that API responses usually come as a single minified line — hundreds of fields crammed together with no whitespace. Good luck finding the field you need in that. A formatter adds indentation so you can actually read the structure.

What This Tool Does

Feature	Description
Format	Pretty-prints with 2-space indentation so you can read nested structures
Minify	Strips all whitespace — useful for API payloads and config storage
Validate	Checks for syntax errors and tells you exactly what went wrong

Common JSON Mistakes

Trailing commas — JSON doesn't allow a comma after the last item, even though JavaScript does
Unquoted keys — keys must be wrapped in double quotes. Single quotes don't count either
Single quotes — JSON only accepts double quotes for strings
Leading zeros — 007 is not a valid JSON number