Punycode Encoder/Decoder

Convert Internationalized Domain Names (IDN) to Punycode

Reliable Punycode converter for international domains. Instantly turn domains like 'münchen.de' into 'xn--mnchen-3ya.de' or decode existing Punycode strings back to Unicode. Supports the latest IDNA standards, including emoji domains.

Seamless IDN to Punycode Conversion

Punycode is a critical encoding system (standardized in RFC 3492) that allows Unicode domain names to be represented using the limited ASCII character set used by the Domain Name System (DNS). Domain names that contain international characters (like thếgiới.vn) or Emojis are referred to as Internationalized Domain Names (IDNs).

Our Online Punycode Encoder/Decoder helps developers and SEO specialists manage these domains with ease.

How Punycode Works

Unicode Input: You enter a friendly domain name like i❤️.ws.
Encoding: The browser or software uses the Punycode algorithm to transform the special character.
ASCII Prefix: A standard prefix xn-- is added to indicate it is an encoded IDN.
Final String: The result is xn--i-7iq.ws, which is what computers actually use to find your server.

Professional Features

1. IDN to ASCII (Encoding)

Input any domain containing accents, non-Latin scripts (Cyrillic, Arabic, Asian), or Emojis. Our tool will return the correctly formatted Punycode string required for your DNS registrar.

2. ASCII to IDN (Decoding)

Have a list of domains starting with xn--? Paste them here to instantly see their human-readable international representations.

3. Full Domain Support

Unlike simple encoders, our tool handles full domain structures, splitting the labels by the dot (.) and only encoding the parts that contain non-ASCII characters.

Why Use a Punycode Converter?

SEO Analysis: Many SEO tools display backlink data in Punycode. Use this decoder to understand which sites are actually linking to you.
DNS Setup: When configuring A-records or CNAMEs for an IDN, most registrars require the Punycode version.
Web Development: Ensure your code correctly handles user-entered international email addresses or web URLs.
Emoji Domain Marketing: Test and verify the encoded version of your creative emoji domains before purchase.

Common IDN Examples

International Domain	Punycode Equivalent
`thếgiới.vn`	`xn--thgii-uqa7086b.vn`
`münchen.de`	`xn--mnchen-3ya.de`
`日本語.jp`	`xn--wgv71a.jp`
`☕.com`	`xn--53h.com`

Frequently Asked Questions

What does the xn-- prefix mean?

The xn-- prefix is an "ACE" (ASCII Compatible Encoding) prefix. It tells software that the following string is not a literal name but an encoded Punycode sequence representing Unicode characters.

Does Punycode affect my SEO?

Search engines like Google generally understand both versions of the domain. However, displaying the Unicode version to users in your content or ads is often better for click-through rates (CTR) in specific regions.

Can I encode email addresses?

Yes, you can encode the domain part of an email address (everything after the @) just like a standard website domain.

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