diff --git a/app/MindWork AI Studio/Chat/FileAttachment.cs b/app/MindWork AI Studio/Chat/FileAttachment.cs
index bacae923..a98b3574 100644
--- a/app/MindWork AI Studio/Chat/FileAttachment.cs	
+++ b/app/MindWork AI Studio/Chat/FileAttachment.cs	
@@ -11,20 +11,37 @@ namespace AIStudio.Chat;
 /// <param name="FileSizeBytes">The size of the file in bytes.</param>
 public readonly record struct FileAttachment(FileAttachmentType Type, string FileName, string FilePath, long FileSizeBytes)
 {
-    /// <summary>
-    /// Gets a value indicating whether the file still exists on the file system.
-    /// </summary>
-    public bool Exists => File.Exists(this.FilePath);
-
     /// <summary>
     /// Gets a value indicating whether the file type is forbidden and should not be attached.
     /// </summary>
-    public bool IsForbidden => this.Type == FileAttachmentType.FORBIDDEN;
+    /// <remarks>
+    /// The state is determined once during construction and does not change.
+    /// </remarks>
+    public bool IsForbidden { get; } = Type == FileAttachmentType.FORBIDDEN;
 
     /// <summary>
     /// Gets a value indicating whether the file type is valid and allowed to be attached.
     /// </summary>
-    public bool IsValid => this.Type != FileAttachmentType.FORBIDDEN;
+    /// <remarks>
+    /// The state is determined once during construction and does not change.
+    /// </remarks>
+    public bool IsValid { get; } = Type != FileAttachmentType.FORBIDDEN;
+
+    /// <summary>
+    /// Gets a value indicating whether the file type is an image.
+    /// </summary>
+    /// <remarks>
+    /// The state is determined once during construction and does not change.
+    /// </remarks>
+    public bool IsImage { get; } = Type == FileAttachmentType.IMAGE;
+
+    /// <summary>
+    /// Gets a value indicating whether the file still exists on the file system.
+    /// </summary>
+    /// <remarks>
+    /// This property checks the file system each time it is accessed.
+    /// </remarks>
+    public bool Exists => File.Exists(this.FilePath);
 
     /// <summary>
     /// Creates a FileAttachment from a file path by automatically determining the type,