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Punycode / IDN 转换器

将国际化域名与 ASCII 相互转换。

关于此工具

Convert Unicode domains with this punycode converter to ensure DNS-safe ASCII labels for internationalized names. It is useful for developers handling multilingual URLs, email domains, and IDN validation workflows.

The tool helps prevent encoding mismatches between UI input and backend processing. Reliable punycode conversion improves compatibility across resolvers, browsers, and certificate tooling.

常见问题

What is punycode used for?
Punycode encodes internationalized domain labels into ASCII so they can be processed by standard DNS infrastructure.
Why convert Unicode domains before validation?
Conversion normalizes representation and avoids false mismatches in DNS checks, SSL issuance, and allowlist logic.
Can punycode affect phishing protection?
Yes, visibility into encoded domains helps detect homograph-style abuse and improves domain risk review.