diff --git a/Tusker/Screens/Gallery/ImageGalleryContentViewController.swift b/Tusker/Screens/Gallery/ImageGalleryContentViewController.swift
index c45b6641..a8721153 100644
--- a/Tusker/Screens/Gallery/ImageGalleryContentViewController.swift
+++ b/Tusker/Screens/Gallery/ImageGalleryContentViewController.swift
@@ -19,12 +19,16 @@ class ImageGalleryContentViewController: UIViewController, GalleryContentViewCon
     let image: UIImage
     let gifController: GIFController?
     
+    private var imageView: GIFImageView!
+    
     @available(iOS 16.0, macCatalyst 17.0, *)
     private static let analyzer = ImageAnalyzer()
     private var _analysisInteraction: AnyObject?
     @available(iOS 16.0, macCatalyst 17.0, *)
     private var analysisInteraction: ImageAnalysisInteraction? { _analysisInteraction as? ImageAnalysisInteraction }
     
+    private var isGrayscale = false
+    
     init(url: URL, caption: String?, originalData: Data?, image: UIImage, gifController: GIFController?) {
         self.url = url
         self.caption = caption
@@ -44,7 +48,14 @@ class ImageGalleryContentViewController: UIViewController, GalleryContentViewCon
     override func viewDidLoad() {
         super.viewDidLoad()
         
-        let imageView = GIFImageView(image: image)
+        isGrayscale = Preferences.shared.grayscaleImages
+        let maybeGrayscaleImage = if isGrayscale {
+            ImageGrayscalifier.convert(url: url, image: image) ?? image
+        } else {
+            image
+        }
+        
+        imageView = GIFImageView(image: maybeGrayscaleImage)
         imageView.translatesAutoresizingMaskIntoConstraints = false
         imageView.contentMode = .scaleAspectFit
         imageView.isUserInteractionEnabled = true
@@ -75,6 +86,8 @@ class ImageGalleryContentViewController: UIViewController, GalleryContentViewCon
                 }
             }
         }
+        
+        NotificationCenter.default.addObserver(self, selector: #selector(preferencesChanged), name: .preferencesChanged, object: nil)
     }
     
     override func viewWillAppear(_ animated: Bool) {
@@ -85,6 +98,20 @@ class ImageGalleryContentViewController: UIViewController, GalleryContentViewCon
         }
     }
     
+    @objc private func preferencesChanged() {
+        if isGrayscale != Preferences.shared.grayscaleImages {
+            isGrayscale = Preferences.shared.grayscaleImages
+            let image = if isGrayscale {
+                ImageGrayscalifier.convert(url: url, image: image)
+            } else {
+                image
+            }
+            if let image {
+                imageView.image = image
+            }
+        }
+    }
+    
     // MARK: GalleryContentViewController
     
     var container: (any GalleryVC.GalleryContentViewControllerContainer)?