Convert internationalized domain names (IDN) to and from Punycode (xn--), with homograph character risk hints. Runs locally in your browser.
TL;DR: Convert IDN domains to and from Punycode (xn--) with homograph risk hints. Runs locally.
For local tools, open DevTools → Network and search your input — it should not appear in requests. API Tester’s optional proxy is the documented exception: only the request you send is relayed.