diff --git a/DcCore/DcCore/Extensions/UIImage+Extensions.swift b/DcCore/DcCore/Extensions/UIImage+Extensions.swift
index 530224ecb..a68a2efba 100644
--- a/DcCore/DcCore/Extensions/UIImage+Extensions.swift
+++ b/DcCore/DcCore/Extensions/UIImage+Extensions.swift
@@ -53,5 +53,40 @@ public extension UIImage {
       guard let alpha: CGImageAlphaInfo = self.cgImage?.alphaInfo else { return false }
       return alpha == .first || alpha == .last || alpha == .premultipliedFirst || alpha == .premultipliedLast
     }
+    
+    func hasTransparentCorner() -> Bool {
+        if !self.isTransparent() {
+            return false
+        }
+        guard let cgImage = self.cgImage,
+              let data = cgImage.dataProvider?.data as Data?,
+              let dataPtr = data.withUnsafeBytes({ $0.bindMemory(to: UInt8.self).baseAddress }),
+              !data.isEmpty else {
+            return false // Unable to get the CGImage or image data
+        }
+    
+        let width = cgImage.width
+        let height = cgImage.height
+        let bytesPerRow = cgImage.bytesPerRow
+        
+        // Check the alpha values of the pixels at the corners
+        let topLeftIndex = 0
+        let topRightIndex = max(0, width - 1)
+        let bottomLeftIndex = max(0, bytesPerRow * (height - 1))
+        let bottomRightIndex = max(0, bytesPerRow * (height - 1) + width - 1)
 
+        var hasTransparentCorner = false
+        if dataPtr[topLeftIndex] < 255 {
+            hasTransparentCorner = true
+        } else if dataPtr[topRightIndex] < 255 {
+            hasTransparentCorner = true
+        } else if dataPtr[bottomLeftIndex] < 255 {
+            hasTransparentCorner = true
+        } else if dataPtr[min(data.count - 1, bottomRightIndex)] < 255 {
+            hasTransparentCorner = true
+        }
+
+        return hasTransparentCorner
+    }
+    
 }
diff --git a/deltachat-ios/Chat/ChatViewController.swift b/deltachat-ios/Chat/ChatViewController.swift
index 70ae4370e..9cad165d0 100644
--- a/deltachat-ios/Chat/ChatViewController.swift
+++ b/deltachat-ios/Chat/ChatViewController.swift
@@ -2760,8 +2760,7 @@ extension ChatViewController: UITextViewDelegate {
 // MARK: - ChatInputTextViewPasteDelegate
 extension ChatViewController: ChatInputTextViewPasteDelegate {
     func onImagePasted(image: UIImage) {
-        let isSticker = image.size.equalTo(CGSize(width: 140, height: 140))
-
+        let isSticker = image.size.equalTo(CGSize(width: 140, height: 140)) || image.hasTransparentCorner()
         if isSticker {
             sendSticker(image)
         } else {
@@ -2800,7 +2799,12 @@ extension ChatViewController: WebxdcSelectorDelegate {
 // MARK: - ChatDropInteractionDelegate
 extension ChatViewController: ChatDropInteractionDelegate {
     func onImageDragAndDropped(image: UIImage) {
-        stageImage(image)
+        let isSticker = image.size.equalTo(CGSize(width: 140, height: 140)) || image.hasTransparentCorner()
+        if isSticker {
+            sendSticker(image)
+        } else {
+            stageImage(image)
+        }
     }
 
     func onVideoDragAndDropped(url: NSURL) {