Convert Internationalized Domains to ASCII URLs

For web developers, IDN owners, and SEO specialists: instantly turn Unicode domains into percent-encoded ASCII URLs that work in legacy systems. Paste your domain and get a compatible URL in one click.

Results update live as you type — no button needed. The Example button fills a sample input.

Why use Punycode URL Generator?

Convert any Unicode domain or full URL to percent-encoded ASCII

Works with internationalized domain names (IDN) and paths

Instant results with no server storage—privacy first

Compatible with legacy systems that reject non-ASCII characters

Free and unlimited use

FAQ

What is Punycode?

Punycode is a way to represent Unicode domain names using ASCII characters, typically with an 'xn--' prefix. This tool provides percent-encoded ASCII URLs, which are different but serve a similar purpose for compatibility.

Why do I need percent-encoded URLs instead of Punycode?

Some legacy systems and applications do not support Punycode or Unicode directly. Percent-encoded ASCII URLs are widely accepted and ensure your links work everywhere.

Is this tool free?

Yes, it's completely free and requires no registration.

Does the tool store my data?

No, all processing happens in your browser. Your data never leaves your device.

Example input

Try it with this sample — paste it into the box above:

https://münchen.de/straße?q=übergröß

How to use Punycode URL Generator

  1. Enter or paste your data into the Unicode Domain or URL box above.
  2. The result appears instantly in the Percent-Encoded ASCII URL box — everything runs in your browser, nothing is uploaded.
  3. Use Copy or Download to keep the result, or Example to load a sample first.

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