diff --git a/src/main/java/net/sourceforge/tess4j/util/ImageIOHelper.java b/src/main/java/net/sourceforge/tess4j/util/ImageIOHelper.java
index b7a6b446..6927e7f6 100644
--- a/src/main/java/net/sourceforge/tess4j/util/ImageIOHelper.java
+++ b/src/main/java/net/sourceforge/tess4j/util/ImageIOHelper.java
@@ -63,6 +63,9 @@ public class ImageIOHelper {
     public static final String JAI_IMAGE_WRITER_MESSAGE = "Need to install JAI Image I/O package.\nhttps://github.com/jai-imageio/jai-imageio-core";
     public static final String JAI_IMAGE_READER_MESSAGE = "Unsupported image format. May need to install JAI Image I/O package.\nhttps://github.com/jai-imageio/jai-imageio-core";
 
+    public static int IMG_DPI_X = 300;
+    public static int IMG_DPI_Y = 300;
+
     /**
      * Creates a list of TIFF image files from an image file. It basically
      * converts images of other formats to TIFF format, or a multi-page TIFF
@@ -589,8 +592,8 @@ public static void mergeTiff(List<IIOImage> imageList, File outputTiff, String c
         try (ImageOutputStream ios = ImageIO.createImageOutputStream(outputTiff)) {
             writer.setOutput(ios);
 
-            int dpiX = 300;
-            int dpiY = 300;
+            int dpiX = ImageIOHelper.IMG_DPI_X;
+            int dpiY = ImageIOHelper.IMG_DPI_Y;
 
             for (IIOImage iioImage : imageList) {
                 // Get the default image metadata.