Unicode is a character encoding standard that supports a wide range of languages and scripts, but not all systems and applications support Unicode domain names. Instead, Punycode is used to represent Unicode characters in ASCII format, which is universally supported.
This web-based utility is called the Punicode converter tool and it allows users to enter a Unicode domain name that contains non-Latin characters. The tool then converts the domain name to its corresponding Punycode representation, which is useful for registering domain names and configuring email servers, among other purposes that require ASCII-encoded domain names.
Web developers, domain name registrars, and system administrators who work with internationalized domain names commonly use the Punicode converter tool to convert domain names to ASCII format for compatibility reasons.