Unicode to Punycode Converter Online - Encode Internationalized Domain Names (IDN)
Convert Internationalized Domain Names (IDNs) from human-readable Unicode (e.g., accents, non-Latin script) to DNS-compatible Punycode (ASCII-safe). Essential for domain registration and web hosting.
Unicode to Punycode Converter Online - Encode Internationalized Domain Names (IDN)
The Essential Tool for Internationalized Domain Names (IDN)
The Unicode to Punycode Converter is an essential utility for anyone working with international domains, often called IDNs (Internationalized Domain Names).
What is Punycode?
Punycode is a special encoding syntax used to represent the full range of Unicode characters (which includes non-Latin letters, accents, diacritics, and symbols from all global languages) into the limited ASCII character set.
The Domain Name System (DNS)—the infrastructure of the internet—was originally designed to only support a small set of ASCII characters (A-Z, 0-9, and the hyphen). Punycode bridges this gap by providing an ASCII-compatible encoding (ACE) that allows browsers and DNS servers to properly process global domain names.
How the Conversion Works:
- Input: You enter a domain label or full domain name containing Unicode characters (e.g., `münchen.de`).
- Encoding: Our tool converts the non-ASCII portion of the domain into a sequence of ASCII characters based on the IETF's RFC 3492 standard.
- Output: The Punycode output is prefixed with `xn--` to signal to the browser and DNS that the string is an Internationalized Domain Name.
Example Conversion:
| Unicode Domain | `münchen.de` |
| :--- | :--- |
| Punycode (ACE String) | `xn--mnchen-3ya.de` |
Why Do You Need to Convert to Punycode?
- Domain Registration: Most domain registrars and back-end systems require the Punycode version for registration.
- DNS & Hosting: Punycode ensures compatibility when setting up DNS records, web hosting configurations, or SSL certificates in systems that do not fully support Unicode.
- Security & Testing: Developers and security researchers use this tool to decode international URLs (Punycode to Unicode) to check for homograph phishing attacks.
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