diff --git a/src/pages/tools/string/url-decode/service.ts b/src/pages/tools/string/url-decode/service.ts
index 5a5b622..7eaef1c 100644
--- a/src/pages/tools/string/url-decode/service.ts
+++ b/src/pages/tools/string/url-decode/service.ts
@@ -1,20 +1,4 @@
 export function decodeString(input: string): string {
   if (!input) return '';
-
-  let result = '';
-  let i = 0;
-
-  while (i < input.length) {
-    if (input[i] === '%' && i + 2 < input.length) {
-      const hex = input.substring(i + 1, i + 3);
-      const code = parseInt(hex, 16);
-      result += String.fromCodePoint(code);
-      i += 3;
-    } else {
-      result += input[i];
-      i++;
-    }
-  }
-
-  return result;
+  return decodeURIComponent(input);
 }