Browser tool

JSON formatter

Validate, format and minify JSON. Check the limits before changing important data.

Input JSON

Up to 200,000 UTF-16 units. Input is processed locally and is not saved.

Ready when you are.

Result

JSON

A reproducible example of a 17-digit ID changing during parsing, and when to use a string.

JSON

See a repeated key disappear, integer-like keys move, and whitespace change.