Punycode is used to represent international domain names in ASCII format. Our converter allows you to switch between human-readable Unicode domains and their xn-- encoded counterparts for registration and technical troubleshooting.
Privacy Protected
Punycode Converter - IDN to ASCII Conversion - FusioFiles
Convert International Domain Names (IDN) between Unicode and Punycode (ASCII) formats instantly. Fast, free, and 100% private. All processing happens locally.
Share Tool
Select files or drag & drop here
Processed 100% locally in your browser. Your files never touch an external server.
Choose File to Begin
100% Client-Side Privacy•No File Size Limits•Free Forever
How to use Punycode Converter
FusioFiles 100% Client-Side Privacy Guarantee
Your files and data never leave your browser — processed directly on your device.
Zero Server UploadsExecution occurs entirely in browser memory via WebAssembly and HTML5 Canvas.
HIPAA & GDPR ReadySafe for confidential tax forms, medical records, financial sheets, and legal contracts.
Zero Cloud LatencyInstant results with no upload delays, server queues, or third-party tracking.
Automatic RAM PurgeBuffers and caches are automatically wiped clean the instant you close the tab.
1
Enter Domain
Input an internationalized domain name (IDN).
2
ASCII Map
The tool converts special characters to xn-- syntax.
3
Copy Result
Retrieve the Punycode string for DNS registration.
Key Features
Unicode to Punycode
Converts symbols to ASCII.
Punycode to Unicode
Decodes xn-- domains.
Instant results
Real-time conversion.
Clear output
Copy-paste ready results.
Frequently Asked Questions
The 'xn--' prefix indicates that the domain name contains non-ASCII characters encoded via Punycode.
Related Tools
View allLast updated on