KivTools

Punycode & IDN Converter with Homograph Detection

Convert a domain name between Unicode and ASCII Punycode forms and flag homograph risks such as mixed scripts, invisible controls, and lookalike characters.

Runs locally in your browser
Domain text is analyzed locally and no DNS or website request is made. A clean result reduces obvious risks but cannot prove that a domain is trustworthy.
Unicode or Punycode domainA hostname only; paths and query strings are removed
Per-label script analysis
LabelASCII / PunycodeScriptsRisk
Enter a domain to inspect each label.
Findings
  • The analyzer will report mixed scripts, invisible characters, bidirectional controls, and common lookalike letters.

Treat Unicode display names as untrusted input

For account recovery, certificates, email allowlists, redirects, and security decisions, normalize the hostname and compare the ASCII form using a current IDNA implementation and an application-specific policy.

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