← Developer Utilities
DEVELOPER UTILITIES / LOCAL TOOL

JSON Formatter

Validate, format or minify JSON.

PROCESSING / LOCALInputs stay in this tab

OUTPUT / LOCAL
Run the tool to see a result.
HOW IT WORKS

Parse before presenting

The browser parses the input as JSON, then serializes it with indentation or a compact form.

Limits to keep in mind

Formatting validates syntax, not whether field names, values or business rules are correct.

A PRACTICAL WORKFLOW

Use the result carefully.

01Paste valid JSON and run the formatter to validate and indent it.
02Run the utility and inspect the complete output.
03Inspect the parsed structure and validate it against a schema when correctness matters.
COMMON QUESTION
Why are comments rejected?

Standard JSON does not include comments, trailing commas or unquoted property names.