Convert tools

Punycode Encoder / Decoder

Punycode Encoder / Decoder. Local browser processing.

Convert in your browser · No sign-up

PunycodeAll encoding tools ↗

Convert domain names only. This implements Punycode, not full UTS #46 URL normalization.

domain only / RFC 3492 / not full UTS #46

How to use

  1. Enter your data and parameters, or load the example.
  2. Choose the operation and confirm the input format.
  3. Run the tool, then copy or download the result.

Example

例子.中国 ⇄ xn--fsqu00a.xn--fiqs8s

Details and limitations

Everything runs in your browser; text, files and keys are not uploaded.

Input is limited to 100,000 characters per field. Cancel stops the worker and discards the pending result.

Hashing is one-way. Encoding and obfuscation do not keep data secret.

FAQ

Are my keys or files uploaded?

No. Calculation happens locally in a Web Worker. Clearing or leaving the page discards its working state.

Format references

Tool page updated: