Online tool for formatting, minifying, and browsing JSON structure.
JSON Formatter is a free online tool for formatting JSON with indentation or minifying it into a compact string. It is useful for API responses, configuration files, logs, webhook payloads, mock data, and frontend development. Processing runs locally in your browser and data is not sent to the server.
Choose a related tool for the next step.
Data passed between tools is kept only in the current browser session.
JSON Formatter helps you quickly turn JSON into readable indented output or minify it into a compact string. The tool is useful for debugging API responses, configuration files, logs, webhook payloads, mock data, and frontend development.
You can choose indent size, sort object keys, keep Unicode readable or escape non-ASCII characters. The service also shows a JSON structure tree with objects, arrays, and values.
Processing runs locally in your browser. Data is not sent to the UtiLab server.