Yes, completely free with no signup or usage limit.

Is my data uploaded to a server?

No. Everything runs directly in your browser.

Does minifying change the data?

No â€” minifying only removes whitespace and formatting; the underlying data structure is unchanged.

Strip whitespace from JSON to make it as small as possible. Processed entirely in your browser.

JSON input

: Yes, completely free with no signup or usage limit.
: No. Everything runs directly in your browser.
: No â€” minifying only removes whitespace and formatting; the underlying data structure is unchanged.