#596 · Language & Unicode

Punycode Domain Inspector

Inspect internationalized domain names label by label. The tool converts Unicode hostnames to ASCII Punycode with the browser URL engine, decodes valid xn-- labels, and flags mixed scripts or parsing problems that deserve a closer look.

Text Input

Domain names
Ad space

How to use this text tool

  1. Paste or type the text you want to process.
  2. Choose any options that apply to your target format.
  3. Select Inspect Domains or press Ctrl/Cmd + Enter.
  4. Review the report, then copy or download the result.

What this tool does

Punycode Domain Inspector turns hard-to-see text details into a readable result you can check before editing production content.

Each line is parsed as a hostname. URL.hostname supplies the ASCII form, while URL parsing of xn-- labels recovers the browser’s Unicode display form.

This is a structural check, not a reputation or phishing verdict. Visually confusing letters can still occur within one script.

Example

Load the sample to see a representative input. The result identifies or converts the relevant Unicode and locale details while leaving unrelated text in place.

Use cases

  • Checking localized UI copy before release
  • Cleaning data imported from documents or spreadsheets
  • Investigating text that compares or renders unexpectedly
  • Preparing reproducible notes for developers and translators

Tips for better output

  • Keep a copy of the original text.
  • Test the exact locale or target platform you plan to support.
  • Inspect warnings instead of applying bulk replacements blindly.
  • Use the downloadable report when sharing a finding.
  • Retest after changing normalization or formatting rules.

Processing details

Processing happens locally with built-in JavaScript Unicode and internationalization features. The report is generated from the text and options currently visible on the page.

This is a structural check, not a reputation or phishing verdict. Visually confusing letters can still occur within one script.

Frequently asked questions

Does the Punycode Domain Inspector send my text to a server?

No. The processing runs in your browser, so the pasted text is not uploaded by this page.

Can I use the result in a spreadsheet or localization file?

Yes. Copy the text output, download the report, or use the CSV and JSON exports when they appear.

Why can the result differ between browsers?

Unicode and locale data are updated over time. Browsers, fonts, and operating systems may support different versions.

Will this tool change my original text automatically?

No. Your input remains in the input box. Review the generated result before replacing source data.

What should I do with an invalid or suspicious result?

Check the reported code points or fields against the rules of the system that will consume the text.

Report fields

FieldMeaning
OutputThe processed text or inspection report
SummaryA count of the main findings
DetailsUnicode or locale-specific evidence