Question 1

What is Punycode?

Accepted Answer

Punycode is an encoding syntax for representing Unicode characters using only ASCII characters. It's primarily used in internationalized domain names (IDNs) to convert non-ASCII characters into the ASCII-compatible encoding (ACE) format.

Question 2

Why do we need Punycode for domains?

Accepted Answer

The DNS system only supports ASCII characters. Punycode converts international domain names (like münchen.de) into ASCII-compatible format (xn--mnchen-3ya.de) that DNS can resolve.

Question 3

What does 'xn--' mean?

Accepted Answer

The 'xn--' prefix indicates that the domain label has been encoded using Punycode (ACE prefix). It tells DNS resolvers that the label needs to be decoded from Punycode.

Question 4

How do I encode a domain to Punycode?

Accepted Answer

Simply enter the international domain name (e.g., 日本.jp) and click 'Encode'. The tool will convert each label and show the Punycode equivalent (xn--wgv71a.jp).

Question 5

Can I decode Punycode back?

Accepted Answer

Yes! Enter a Punycode domain (e.g., xn--mnchen-3ya.de) and click 'Decode' to see the original Unicode domain name (münchen.de).

Question 6

Is this conversion done in my browser?

Accepted Answer

Yes, all encoding and decoding happens entirely in your browser using JavaScript. No data is sent to any server.

Question 7

Does it support full URLs?

Accepted Answer

Yes, you can enter full URLs like https://日本.jp/page and the tool will encode only the domain part while preserving the rest of the URL structure.

Question 8

What characters are supported?

Accepted Answer

Punycode supports all Unicode characters that can be used in domain names, including Chinese, Japanese, Korean, Arabic, Hebrew, Cyrillic, accented Latin characters, and more.

Punycode Encoder/Decoder

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Punycode Encoder/Decoder

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