diff --git a/src/types/ext.ts b/src/types/ext.ts
index c13aa39..0344b70 100644
--- a/src/types/ext.ts
+++ b/src/types/ext.ts
@@ -56,27 +56,20 @@ Array.prototype.foldl = function <T, B>(f: (x: T, acc: B) => B, acc: B): B {
 // STRING EXTENTION
 declare global {
   interface String {
-    btoa: () => String;
     toEncoded: () => String;
     toDecoded: () => String;
   }
 }
 
-String.prototype.btoa = function () {
-  return window.btoa(this);
-};
-
 String.prototype.toEncoded = function () {
-  return window.btoa(
-    Array.from(this as string, (c) => c.charCodeAt(0)).foldl(
-      (e, v) => v + String.fromCharCode(e),
-      "",
-    ),
-  );
+  return window.btoa(encodeURIComponent(Array.from(this as string, (c) => c.charCodeAt(0)).foldl(
+    (e, v) => v + String.fromCharCode(e),
+    "",
+  )))
 };
 
 String.prototype.toDecoded = function () {
-  return Array.from(window.atob(this), (c) => c.charCodeAt(0)).foldl(
+  return Array.from(decodeURIComponent(window.atob(this as string)), (c) => c.charCodeAt(0)).foldl(
     (e, v) => v + String.fromCharCode(e),
     "",
   );