How to use this tool
Paste JSON and choose Format, Minify or Validate. Copy the result into your editor or download a JSON file.
A quick example
Format adds two-space indentation without changing the values.
Supported formats & limitations
Preserves numeric tokens, including integers larger than JavaScript’s safe range. Duplicate object keys are rejected. Maximum input: 1 MiB.
Does this tool upload my input?
No. Tool processing happens in your browser. Your input and result are not automatically saved. The host may still receive ordinary page access logs.Read about privacy.