diff --git a/SabreTools.Serialization/Internal.Deserializer.cs b/SabreTools.Serialization/Internal.Deserializer.cs
index b8f00b7f..5421df60 100644
--- a/SabreTools.Serialization/Internal.Deserializer.cs
+++ b/SabreTools.Serialization/Internal.Deserializer.cs
@@ -1066,7 +1066,7 @@ namespace SabreTools.Serialization
         }
 
         #endregion
-        
+
         #region Logiqx
 
         /// <summary>
@@ -1232,5 +1232,22 @@ namespace SabreTools.Serialization
         }
 
         #endregion
+
+        #region OfflineList
+
+        /// <summary>
+        /// Convert from <cref="Models.Internal.Rom"/> to <cref="Models.OfflineList.FileRomCRC"/>
+        /// </summary>
+        public static Models.OfflineList.FileRomCRC ConvertToOfflineList(Models.Internal.Rom item)
+        {
+            var fileRomCRC = new Models.OfflineList.FileRomCRC
+            {
+                Extension = item.ReadString(Models.Internal.Rom.ExtensionKey),
+                Content = item.ReadString(Models.Internal.Rom.CRCKey),
+            };
+            return fileRomCRC;
+        }
+
+        #endregion
     }
 }
\ No newline at end of file
diff --git a/SabreTools.Serialization/Internal.Serializer.cs b/SabreTools.Serialization/Internal.Serializer.cs
index 63dd8b16..74cbd64a 100644
--- a/SabreTools.Serialization/Internal.Serializer.cs
+++ b/SabreTools.Serialization/Internal.Serializer.cs
@@ -1067,7 +1067,7 @@ namespace SabreTools.Serialization
         }
 
         #endregion
-        
+
         #region Logiqx
 
         /// <summary>
@@ -1233,5 +1233,22 @@ namespace SabreTools.Serialization
         }
 
         #endregion
+
+        #region OfflineList
+
+        /// <summary>
+        /// Convert from <cref="Models.OfflineList.FileRomCRC"/> to <cref="Models.Internal.Rom"/>
+        /// </summary>
+        public static Models.Internal.Rom ConvertFromOfflineList(Models.OfflineList.FileRomCRC item)
+        {
+            var rom = new Models.Internal.Rom
+            {
+                [Models.Internal.Rom.ExtensionKey] = item.Extension,
+                [Models.Internal.Rom.CRCKey] = item.Content,
+            };
+            return rom;
+        }
+
+        #endregion
     }
 }
\ No newline at end of file