diff --git a/SabreTools.Library/FileTypes/BaseArchive.cs b/SabreTools.Library/FileTypes/BaseArchive.cs
index bd1b7785..ba76c42c 100644
--- a/SabreTools.Library/FileTypes/BaseArchive.cs
+++ b/SabreTools.Library/FileTypes/BaseArchive.cs
@@ -34,8 +34,9 @@ namespace SabreTools.Library.FileTypes
 		/// Create a new Archive from the given file
 		/// </summary>
 		/// <param name="filename">Name of the file to use as an archive</param>
-		public BaseArchive(string filename)
-			: base(filename)
+		/// <param name="getHashes">True if hashes for this file should be calculated, false otherwise (default)</param>
+		public BaseArchive(string filename, bool getHashes = false)
+			: base(filename, getHashes)
 		{
 		}
 
diff --git a/SabreTools.Library/FileTypes/BaseFile.cs b/SabreTools.Library/FileTypes/BaseFile.cs
index 4520023c..d625639d 100644
--- a/SabreTools.Library/FileTypes/BaseFile.cs
+++ b/SabreTools.Library/FileTypes/BaseFile.cs
@@ -102,21 +102,26 @@ namespace SabreTools.Library.FileTypes
 		/// Create a new BaseFile from the given file
 		/// </summary>
 		/// <param name="filename">Name of the file to use</param>
-		public BaseFile(string filename)
+		/// <param name="getHashes">True if hashes for this file should be calculated (default), false otherwise</param>
+		public BaseFile(string filename, bool getHashes = true)
 		{
 			this._filename = filename;
-			BaseFile temp = Utilities.GetFileInfo(_filename);
 
-			if (temp != null)
+			if (getHashes)
 			{
-				this._parent = temp.Parent;
-				this._date = temp.Date;
-				this._crc = temp.CRC;
-				this._md5 = temp.MD5;
-				this._sha1 = temp.SHA1;
-				this._sha256 = temp.SHA256;
-				this._sha384 = temp.SHA384;
-				this._sha512 = temp.SHA512;
+				BaseFile temp = Utilities.GetFileInfo(_filename);
+
+				if (temp != null)
+				{
+					this._parent = temp.Parent;
+					this._date = temp.Date;
+					this._crc = temp.CRC;
+					this._md5 = temp.MD5;
+					this._sha1 = temp.SHA1;
+					this._sha256 = temp.SHA256;
+					this._sha384 = temp.SHA384;
+					this._sha512 = temp.SHA512;
+				}
 			}
 		}
 
@@ -125,19 +130,28 @@ namespace SabreTools.Library.FileTypes
 		/// </summary>
 		/// <param name="filename">Name of the file to use</param>
 		/// <param name="stream">Stream to populate information from</param>
-		public BaseFile(string filename, Stream stream)
+		/// <param name="getHashes">True if hashes for this file should be calculated (default), false otherwise</param>
+		public BaseFile(string filename, Stream stream, bool getHashes = true)
 		{
-			BaseFile temp = Utilities.GetStreamInfo(stream, stream.Length);
-
 			this._filename = filename;
-			this._parent = temp.Parent;
-			this._date = temp.Date;
-			this._crc = temp.CRC;
-			this._md5 = temp.MD5;
-			this._sha1 = temp.SHA1;
-			this._sha256 = temp.SHA256;
-			this._sha384 = temp.SHA384;
-			this._sha512 = temp.SHA512;
+
+			if (getHashes)
+			{
+				BaseFile temp = Utilities.GetStreamInfo(stream, stream.Length);
+
+				if(temp != null)
+				{
+					this._parent = temp.Parent;
+					this._date = temp.Date;
+					this._crc = temp.CRC;
+					this._md5 = temp.MD5;
+					this._sha1 = temp.SHA1;
+					this._sha256 = temp.SHA256;
+					this._sha384 = temp.SHA384;
+					this._sha512 = temp.SHA512;
+				}
+			}
+				
 		}
 
 		#endregion
diff --git a/SabreTools.Library/FileTypes/Folder.cs b/SabreTools.Library/FileTypes/Folder.cs
index cf8e9ca1..bf75e549 100644
--- a/SabreTools.Library/FileTypes/Folder.cs
+++ b/SabreTools.Library/FileTypes/Folder.cs
@@ -50,8 +50,9 @@ namespace SabreTools.Library.FileTypes
 		/// </summary>
 		/// <param name="filename">Name of the file to use as an archive</param>
 		/// <param name="read">True for opening file as read, false for opening file as write</param>
-		public Folder(string filename)
-			: base(filename)
+		/// <param name="getHashes">True if hashes for this file should be calculated, false otherwise (default)</param>
+		public Folder(string filename, bool getHashes = false)
+			: base(filename, getHashes)
 		{
 			_fileType = FileType.Folder;
 		}
diff --git a/SabreTools.Library/FileTypes/GZipArchive.cs b/SabreTools.Library/FileTypes/GZipArchive.cs
index 1c33cc44..0c94acdb 100644
--- a/SabreTools.Library/FileTypes/GZipArchive.cs
+++ b/SabreTools.Library/FileTypes/GZipArchive.cs
@@ -45,8 +45,9 @@ namespace SabreTools.Library.FileTypes
 		/// </summary>
 		/// <param name="filename">Name of the file to use as an archive</param>
 		/// <param name="read">True for opening file as read, false for opening file as write</param>
-		public GZipArchive(string filename)
-			: base(filename)
+		/// <param name="getHashes">True if hashes for this file should be calculated, false otherwise (default)</param>
+		public GZipArchive(string filename, bool getHashes = false)
+			: base(filename, getHashes)
 		{
 			_fileType = FileType.GZipArchive;
 		}
diff --git a/SabreTools.Library/FileTypes/LRZipArchive.cs b/SabreTools.Library/FileTypes/LRZipArchive.cs
index 35b53a81..4ffb5c5b 100644
--- a/SabreTools.Library/FileTypes/LRZipArchive.cs
+++ b/SabreTools.Library/FileTypes/LRZipArchive.cs
@@ -34,8 +34,9 @@ namespace SabreTools.Library.FileTypes
 		/// Create a new LRZipArchive from the given file
 		/// </summary>
 		/// <param name="filename">Name of the file to use as an archive</param>
-		public LRZipArchive(string filename)
-			: base(filename)
+		/// <param name="getHashes">True if hashes for this file should be calculated, false otherwise (default)</param>
+		public LRZipArchive(string filename, bool getHashes = false)
+			: base(filename, getHashes)
 		{
 			_fileType = FileType.LRZipArchive;
 		}
diff --git a/SabreTools.Library/FileTypes/LZ4Archive.cs b/SabreTools.Library/FileTypes/LZ4Archive.cs
index 7d8ac92f..b307549a 100644
--- a/SabreTools.Library/FileTypes/LZ4Archive.cs
+++ b/SabreTools.Library/FileTypes/LZ4Archive.cs
@@ -34,8 +34,9 @@ namespace SabreTools.Library.FileTypes
 		/// Create a new LZ4Archive from the given file
 		/// </summary>
 		/// <param name="filename">Name of the file to use as an archive</param>
-		public LZ4Archive(string filename)
-			: base(filename)
+		/// <param name="getHashes">True if hashes for this file should be calculated, false otherwise (default)</param>
+		public LZ4Archive(string filename, bool getHashes = false)
+			: base(filename, getHashes)
 		{
 			_fileType = FileType.LZ4Archive;
 		}
diff --git a/SabreTools.Library/FileTypes/RarArchive.cs b/SabreTools.Library/FileTypes/RarArchive.cs
index c748de60..641066e4 100644
--- a/SabreTools.Library/FileTypes/RarArchive.cs
+++ b/SabreTools.Library/FileTypes/RarArchive.cs
@@ -45,8 +45,9 @@ namespace SabreTools.Library.FileTypes
 		/// </summary>
 		/// <param name="filename">Name of the file to use as an archive</param>
 		/// <param name="read">True for opening file as read, false for opening file as write</param>
-		public RarArchive(string filename)
-			: base(filename)
+		/// <param name="getHashes">True if hashes for this file should be calculated, false otherwise (default)</param>
+		public RarArchive(string filename, bool getHashes = false)
+			: base(filename, getHashes)
 		{
 			_fileType = FileType.RarArchive;
 		}
diff --git a/SabreTools.Library/FileTypes/SevenZipArchive.cs b/SabreTools.Library/FileTypes/SevenZipArchive.cs
index 46622615..1d430afd 100644
--- a/SabreTools.Library/FileTypes/SevenZipArchive.cs
+++ b/SabreTools.Library/FileTypes/SevenZipArchive.cs
@@ -48,8 +48,9 @@ namespace SabreTools.Library.FileTypes
 		/// </summary>
 		/// <param name="filename">Name of the file to use as an archive</param>
 		/// <param name="read">True for opening file as read, false for opening file as write</param>
-		public SevenZipArchive(string filename)
-			: base(filename)
+		/// <param name="getHashes">True if hashes for this file should be calculated, false otherwise (default)</param>
+		public SevenZipArchive(string filename, bool getHashes = false)
+			: base(filename, getHashes)
 		{
 			_fileType = FileType.SevenZipArchive;
 		}
diff --git a/SabreTools.Library/FileTypes/TapeArchive.cs b/SabreTools.Library/FileTypes/TapeArchive.cs
index 02d81f69..c93c52b0 100644
--- a/SabreTools.Library/FileTypes/TapeArchive.cs
+++ b/SabreTools.Library/FileTypes/TapeArchive.cs
@@ -48,8 +48,9 @@ namespace SabreTools.Library.FileTypes
 		/// </summary>
 		/// <param name="filename">Name of the file to use as an archive</param>
 		/// <param name="read">True for opening file as read, false for opening file as write</param>
-		public TapeArchive(string filename)
-			: base(filename)
+		/// <param name="getHashes">True if hashes for this file should be calculated, false otherwise (default)</param>
+		public TapeArchive(string filename, bool getHashes = false)
+			: base(filename, getHashes)
 		{
 			_fileType = FileType.TapeArchive;
 		}
diff --git a/SabreTools.Library/FileTypes/TorrentZipArchive.cs b/SabreTools.Library/FileTypes/TorrentZipArchive.cs
index 77cbf1e2..a02173e2 100644
--- a/SabreTools.Library/FileTypes/TorrentZipArchive.cs
+++ b/SabreTools.Library/FileTypes/TorrentZipArchive.cs
@@ -44,8 +44,9 @@ namespace SabreTools.Library.FileTypes
 		/// </summary>
 		/// <param name="filename">Name of the file to use as an archive</param>
 		/// <param name="read">True for opening file as read, false for opening file as write</param>
-		public TorrentZipArchive(string filename)
-			: base(filename)
+		/// <param name="getHashes">True if hashes for this file should be calculated, false otherwise (default)</param>
+		public TorrentZipArchive(string filename, bool getHashes = false)
+			: base(filename, getHashes)
 		{
 			_fileType = FileType.ZipArchive;
 		}
diff --git a/SabreTools.Library/FileTypes/XZArchive.cs b/SabreTools.Library/FileTypes/XZArchive.cs
index 5e73c16b..f0ebd430 100644
--- a/SabreTools.Library/FileTypes/XZArchive.cs
+++ b/SabreTools.Library/FileTypes/XZArchive.cs
@@ -48,8 +48,9 @@ namespace SabreTools.Library.FileTypes
 		/// </summary>
 		/// <param name="filename">Name of the file to use as an archive</param>
 		/// <param name="read">True for opening file as read, false for opening file as write</param>
-		public XZArchive(string filename)
-			: base(filename)
+		/// <param name="getHashes">True if hashes for this file should be calculated, false otherwise (default)</param>
+		public XZArchive(string filename, bool getHashes = false)
+			: base(filename, getHashes)
 		{
 			_fileType = FileType.XZArchive;
 		}
diff --git a/SabreTools.Library/FileTypes/ZPAQArchive.cs b/SabreTools.Library/FileTypes/ZPAQArchive.cs
index 7fd012bf..6e34f189 100644
--- a/SabreTools.Library/FileTypes/ZPAQArchive.cs
+++ b/SabreTools.Library/FileTypes/ZPAQArchive.cs
@@ -34,8 +34,9 @@ namespace SabreTools.Library.FileTypes
 		/// Create a new ZPAQArchive from the given file
 		/// </summary>
 		/// <param name="filename">Name of the file to use as an archive</param>
-		public ZPAQArchive(string filename)
-			: base(filename)
+		/// <param name="getHashes">True if hashes for this file should be calculated, false otherwise (default)</param>
+		public ZPAQArchive(string filename, bool getHashes = false)
+			: base(filename, getHashes)
 		{
 			_fileType = FileType.ZPAQArchive;
 		}
diff --git a/SabreTools.Library/FileTypes/ZstdArchive.cs b/SabreTools.Library/FileTypes/ZstdArchive.cs
index 09343096..ba68aa0a 100644
--- a/SabreTools.Library/FileTypes/ZstdArchive.cs
+++ b/SabreTools.Library/FileTypes/ZstdArchive.cs
@@ -34,8 +34,9 @@ namespace SabreTools.Library.FileTypes
 		/// Create a new ZstdArchive from the given file
 		/// </summary>
 		/// <param name="filename">Name of the file to use as an archive</param>
-		public ZstdArchive(string filename)
-			: base(filename)
+		/// <param name="getHashes">True if hashes for this file should be calculated, false otherwise (default)</param>
+		public ZstdArchive(string filename, bool getHashes)
+			: base(filename, getHashes)
 		{
 			_fileType = FileType.ZstdArchive;
 		}