How to Use the Punycode & IDN Domain Name Converter
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1
Enter a domain name with non-ASCII characters (e.g. `münchen.de`, `café.com`, or `❤️.ws`).
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2
The tool encodes the string into standard DNS ASCII Punycode (e.g. `xn--mnchen-3ya.de`).
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3
Or paste a Punycode string (`xn--...`) to decode it back into readable Unicode text.
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4
Detect homograph look-alike characters often used in phishing attacks.
Practical Example & Use Case
Common Real-World Scenario
Converting the international German domain `münchen.de` to `xn--mnchen-3ya.de` for DNS zone file configuration.
Technical Notes & Limitations
Browser Engine Architecture
Implements standard RFC 3492 Punycode bootstring encoding.
Frequently Asked Questions
What is Punycode?
Punycode is a character encoding standard that translates Unicode domain names into ASCII so they can be processed by legacy DNS infrastructure.