diff --git a/app/assets/py/idnaencode.py b/app/assets/py/idnaencode.py
deleted file mode 100644
index 8c3ccfc..0000000
--- a/app/assets/py/idnaencode.py
+++ /dev/null
@@ -1,15 +0,0 @@
-#-*- coding: utf-8 -*-
-
-import sys
-
-def main(args):
-    if len(args) < 2:
-        print("Insufficient arguments")
-        sys.exit()
-    
-    encoded_domain = args[1].encode('idna').decode("utf-8")
-
-    print(encoded_domain)
-
-if __name__ == "__main__":
-    main(sys.argv)
diff --git a/lib/punycode.js b/lib/punycode.js
index 18e027d..1274911 100644
--- a/lib/punycode.js
+++ b/lib/punycode.js
@@ -1,11 +1,39 @@
-var Py3 = require("lib/python3");
+// punycode.js
+// Namhyeon Go <abuse@catswords.net>
+// https://github.com/gnh1201/welsonjs
+//
+// ***SECURITY NOTICE***
+// The Punycode (IDN) library requires an internet connection. Data may be transmitted externally. Users must also comply with the terms of use.
+// - Privacy Policy: https://policy.catswords.social/site_terms.html
+// - Terms of Service: https://policy.catswords.social/site_extended_description.html
+// 
+var JsonRpc2 = require("lib/jsonrpc2");
+
+var API_URL = "https://public-api.catswords.net";
 
 function encode(s) {
-    return Py3.execScript("app\\assets\\py\\idnaencode.py", [s]).trim();
+    var rpc = JsonRpc2.create(API_URL);
+    var result = rpc.invoke("relay_invoke_method", {
+        "callback": "idn_to_ascii",
+        "args": [s]
+    }, "");
+
+    return result.data;
+}
+
+function decode(s) {
+    var rpc = JsonRpc2.create(API_URL);
+    var result = rpc.invoke("relay_invoke_method", {
+        "callback": "idn_to_utf8",
+        "args": [s]
+    }, "");
+
+    return result.data;
 }
 
 exports.encode = encode;
+exports.decode = decode;
 
-exports.VERSIONINFO = "Punycode Converter (punycode.js) version 0.1";
+exports.VERSIONINFO = "Punycode Public API client (punycode.js) version 0.2";
 exports.global = global;
 exports.require = global.require;