What is this tool?
JSON is a structured text format used by APIs, configuration files, and data exports. Formatting adds indentation; minifying removes unnecessary whitespace.
How to use it
Paste JSON and select Format to validate and indent it, or Minify to create compact output.
Privacy
This tool is designed to process your input locally in the browser. Avoid entering passwords, private keys, or other sensitive production data into any online tool.
Frequently asked questions
Does formatting change my data?
Formatting changes whitespace only. Values and structure remain the same.
Why does JSON validation fail?
Common causes include trailing commas, single quotes, or unquoted property names.