Punycode Converter
NewConvert internationalized domain names (IDN) to and from Punycode (ACE).
Punycode converts internationalized domain labels into ASCII xn-- form so IDNs can travel through DNS safely.
Frequently Asked Questions
What is punycode encoding?
PUNYCODE encoding is a method of representing binary or text data in an alternative format to ensure safe transmission over systems that may not support raw binary. It is widely used in HTTP headers, URLs, email attachments, and API payloads.
How do I idn using Punycode Converter?
Paste your input into the text area and select the desired operation — encoded or decoded output appears instantly. You can also upload a file to process its binary contents directly.
Is punycode the same as encryption?
No. PUNYCODE encoding is a reversible representation format with no secret key — anyone can decode it. Encryption requires a key and is designed to keep data confidential from unauthorised parties.
What characters are supported?
The tool supports the full Unicode character set for text input and handles arbitrary binary data for file-based operations. There are no restrictions on the input character range.
Can I punycode files?
Yes. You can drag and drop or select a file to encode its contents. The output is displayed inline and can be copied or downloaded as a text file for use in other applications.