diff --git a/server/service/image.go b/server/service/image.go
index 8c249a8..437b8fb 100644
--- a/server/service/image.go
+++ b/server/service/image.go
@@ -59,7 +59,7 @@ func CreateImage(uid uint, data []byte) (uint, error) {
 
 	if len(data) == 0 {
 		return 0, model.NewRequestError("Image data is empty")
-	} else if len(data) > 1024*1024*5 {
+	} else if len(data) > 1024*1024*8 {
 		return 0, model.NewRequestError("Image data is too large")
 	}
 
@@ -92,6 +92,11 @@ func CreateImage(uid uint, data []byte) (uint, error) {
 		contentType = "image/webp"
 	}
 
+	// If the image is still too large after conversion, return an error
+	if len(data) > 1024*1024*4 {
+		return 0, model.NewRequestError("Image data is too large after conversion")
+	}
+
 	filename := uuid.New().String()
 	if err := os.WriteFile(imageDir+filename, data, 0644); err != nil {
 		return 0, errors.New("failed to save image file")