diff --git a/Memola/Canvas/Contexts/GraphicContext.swift b/Memola/Canvas/Contexts/GraphicContext.swift
index b1f8254..8abe1c1 100644
--- a/Memola/Canvas/Contexts/GraphicContext.swift
+++ b/Memola/Canvas/Contexts/GraphicContext.swift
@@ -319,7 +319,7 @@ extension GraphicContext {
 // MARK: - Photo
 extension GraphicContext {
     func insertPhoto(at point: CGPoint, photoItem: PhotoItem) -> Photo {
-        let size = photoItem.dimension
+        let size = photoItem.getDimension()
         let origin = point
         let bounds = [origin.x - size.width / 2, origin.y - size.height / 2, origin.x + size.width / 2, origin.y + size.height / 2]
         let photo = Photo(url: photoItem.id, size: size, origin: origin, bounds: bounds, createdAt: .now, bookmark: photoItem.bookmark)
diff --git a/Memola/Canvas/Elements/Photo/Photo.swift b/Memola/Canvas/Elements/Photo/Photo.swift
index 45c720e..cf2fdaa 100644
--- a/Memola/Canvas/Elements/Photo/Photo.swift
+++ b/Memola/Canvas/Elements/Photo/Photo.swift
@@ -77,7 +77,6 @@ extension Photo: Drawable {
         renderEncoder.setFragmentTexture(texture, index: 0)
         renderEncoder.setVertexBuffer(vertexBuffer, offset: 0, index: 0)
         renderEncoder.drawPrimitives(type: .triangle, vertexStart: 0, vertexCount: vertices.count)
-        vertexBuffer = nil
     }
 }
 
diff --git a/Memola/Canvas/Tool/Core/Tool.swift b/Memola/Canvas/Tool/Core/Tool.swift
index a60c984..4c837c2 100644
--- a/Memola/Canvas/Tool/Core/Tool.swift
+++ b/Memola/Canvas/Tool/Core/Tool.swift
@@ -114,33 +114,35 @@ public class Tool: NSObject, ObservableObject {
     }
 
     func selectPhoto(_ image: UIImage, for canvasID: NSManagedObjectID) {
-        guard let resizedImage = resizePhoto(of: image) else { return }
-        let photoItem = bookmarkPhoto(of: resizedImage, with: canvasID)
+        guard let (resizedImage, dimension) = resizePhoto(of: image) else { return }
+        let photoItem = bookmarkPhoto(of: resizedImage, in: dimension, with: canvasID)
         withAnimation {
             selectedPhotoItem = photoItem
         }
     }
 
-    private func resizePhoto(of image: UIImage) -> UIImage? {
-        let targetSize = CGSize(width: 768, height: 768)
+    private func resizePhoto(of image: UIImage) -> (UIImage, CGSize)? {
+        let targetSize = CGSize(width: 512, height: 512)
         let size = image.size
         let widthRatio = targetSize.width / size.width
         let heightRatio = targetSize.height / size.height
-        let newSize = CGSize(
+        let dimension = CGSize(
             width: size.width * min(widthRatio, heightRatio),
             height: size.height * min(widthRatio, heightRatio)
         )
-        let rect = CGRect(origin: .zero, size: newSize)
+        let rect = CGRect(origin: .zero, size: targetSize)
 
-        UIGraphicsBeginImageContextWithOptions(newSize, true, 1.0)
+        UIGraphicsBeginImageContextWithOptions(targetSize, true, 1.0)
         image.draw(in: rect)
         let newImage = UIGraphicsGetImageFromCurrentImageContext()
         UIGraphicsEndImageContext()
 
-        return newImage
+        guard let newImage else { return nil }
+
+        return (newImage, dimension)
     }
 
-    private func bookmarkPhoto(of image: UIImage, with canvasID: NSManagedObjectID) -> PhotoItem? {
+    private func bookmarkPhoto(of image: UIImage, in dimension: CGSize, with canvasID: NSManagedObjectID) -> PhotoItem? {
         guard let data = image.jpegData(compressionQuality: 1) else { return nil }
         let fileManager = FileManager.default
         guard let directory = fileManager.urls(for: .documentDirectory, in: .userDomainMask).first else {
@@ -167,7 +169,7 @@ public class Tool: NSObject, ObservableObject {
         var photoBookmark: PhotoItem?
         do {
             let bookmark = try file.bookmarkData(options: .minimalBookmark)
-            photoBookmark = PhotoItem(id: file, image: image, bookmark: bookmark)
+            photoBookmark = PhotoItem(id: file, image: image, dimension: dimension, bookmark: bookmark)
         } catch {
             NSLog("[Memola] - \(error.localizedDescription)")
         }
diff --git a/Memola/Features/Memo/PhotoPreview/PhotoItem.swift b/Memola/Features/Memo/PhotoPreview/PhotoItem.swift
index fbc6875..d38272e 100644
--- a/Memola/Features/Memo/PhotoPreview/PhotoItem.swift
+++ b/Memola/Features/Memo/PhotoPreview/PhotoItem.swift
@@ -11,13 +11,13 @@ import Foundation
 struct PhotoItem: Identifiable, Equatable {
     var id: URL
     let image: UIImage
+    let dimension: CGSize
     let bookmark: Data
 
-    var dimension: CGSize {
-        let size = image.size
-        let maxSize = max(size.width, size.height)
-        let width = size.width * 128 / maxSize
-        let height = size.height * 128 / maxSize
+    func getDimension() -> CGSize {
+        let maxSize = max(dimension.width, dimension.height)
+        let width = dimension.width * 100 / maxSize
+        let height = dimension.height * 100 / maxSize
         return CGSize(width: width, height: height)
     }
 }