Online IDN Encode

What is an IDN Encode Tool?

I love domain names, but handling non-ASCII characters can be tricky. An IDN (Internationalized Domain Name) Encode tool takes a domain that has special or accented characters and converts it into Punycode. Punycode is a standardized ASCII representation that browsers and DNS servers understand. This way you can safely use täst.com or 例子.测试 in any environment.

What Does Our IDN Encode Tool Do?

Our tool accepts any Unicode domain and outputs its Punycode equivalent. It uses the official punycode.js library (via CDN) to ensure accuracy. I built it so that you paste or type your domain, click Encode IDN, and instantly see the reliable ASCII form ready to go into DNS records or anywhere ASCII is required.

What to Expect When Using This Tool

When you use this tool you will get a few things:

• Clear instructions and placeholder text guiding you.
• A large input area to paste long domain lists or single names.
• Read-only output that you can copy without confusion.
• Error handling if you enter an empty string or invalid format.

The interface is mobile-friendly and scales down neatly on small screens.

Common Use Cases

There are a few scenarios where IDN encoding is essential:

1. DNS Configuration. Many DNS panels only accept ASCII.
2. SSL Certificate Requests. Certificate authorities often require the punycode form.
3. Automation Scripts. When you generate lists of domains in batch, your scripts expect ASCII.
4. Migration. Moving a site from one host to another may strip out non-ASCII characters unless encoded.
5. SEO Audits. Some SEO tools do not recognise Unicode domains correctly.

Input and Output Examples

Example 1

Input:  täst.com
Output: xn--tst-qla.com

Example 2

Input:  例子.测试
Output: xn--fsqu00a.xn--0zwm56d

Those two examples show how common Unicode characters become xn-- plus a unique ASCII translation.

Frequently Asked Questions (FAQs)

What is Punycode?

Punycode is a way to represent Unicode using only ASCII characters. It is defined by an IETF standard so that domain names with accents or non-Latin scripts can still be used.

Why does my tool output start with “xn--”?

The prefix xn-- is used to mark that the rest of the label is encoded in Punycode.

Can I encode multiple domains at once?

This version only handles a single domain per action. You can paste a comma-separated list but you would need to split them manually.

What if I paste a full URL (with https://)?

The tool expects only the domain label. You should remove protocol and path.

Will it work offline?

It requires the punycode.js CDN but once loaded you can use it without a network.

What happens with invalid input?

The tool will show an error message. Make sure you have only letters, digits, dots, or valid Unicode points.

Is the output case-sensitive?

Domain names are case-insensitive. The output is all lowercase for consistency.

Can I integrate this into my own JavaScript?

Yes, you can call punycode.toASCII(yourString) in any script once you include the library.

Does this tool support emoji domains?

Yes, emoji domains such as 😀.ws will encode correctly under Punycode.

Benefits of Using IDN Encode

Using this tool brings several advantages for your site and workflow:

• Compatibility: Ensure your international domains work everywhere.
• Reliability: Based on a battle-tested library.
• Speed: Instant results in your browser without server calls.
• Simplicity: No signup or complicated interface.

Best Practices

1. Always validate your domain for illegal characters before encoding.
2. Use lowercase input to avoid confusion.
3. Keep your punycode results stored with the original for reference.
4. Test the encoded domain in your DNS panel before publishing.

Getting Started

1. Paste your Unicode domain into the Domain Input box.
2. Click Encode IDN.
3. Copy the result from the Encoded Output area.
4. Use that ASCII domain in DNS settings, SSL requests, or scripts.
5. Click Clear All to start fresh.

I hope this tool makes your international domain work smooth and painless. Let me know how it goes!