diff --git a/ayudapy/Static/Format.swift b/ayudapy/Static/Format.swift
index 845ce03..9f5cbfd 100644
--- a/ayudapy/Static/Format.swift
+++ b/ayudapy/Static/Format.swift
@@ -129,12 +129,20 @@ extension String{
         }
         return month
     }
-//    func convertURL()->String{
-//        var newURL = self
-//        let subStr:Substring = "_th"
-//        
-//        return newURL
-//    }
+    func convertURL()->String{
+        let url = self
+        let subStr:Substring = "_th"
+        let start = url.index(url.startIndex, offsetBy: 0)
+        let end = url.index(url.endIndex, offsetBy: -4)
+        let range = start..<end
+        let string = String(url[range])
+        let startExt = url.index(url.endIndex, offsetBy: -4)
+        let endExt = url.index(url.endIndex, offsetBy: 0)
+        let rangeExt = startExt..<endExt
+        let ext = String(url[rangeExt])
+        let returnValue = string + subStr + ext
+        return returnValue
+    }
     
 }