diff --git a/src/main/java/jp/riken/neurodata/tools/BioFormatsImageThumbnail.java b/src/main/java/jp/riken/neurodata/tools/BioFormatsImageThumbnail.java
index 7c0f880..3d78357 100644
--- a/src/main/java/jp/riken/neurodata/tools/BioFormatsImageThumbnail.java
+++ b/src/main/java/jp/riken/neurodata/tools/BioFormatsImageThumbnail.java
@@ -31,7 +31,7 @@ public class BioFormatsImageThumbnail {
     protected static final int BACKGROUND_COLOR = 0x000000;
     protected static final double MAXIMUM_SCALE = 2.0;
 
-    protected static BufferedImage resize(final BufferedImage image, final int width, final int height) {
+    public static BufferedImage resize(final BufferedImage image, final int width, final int height) {
         final boolean hasAlpha = image.getColorModel().hasAlpha();
         final int imageWidth = image.getWidth();
         final int imageHeight = image.getHeight();
@@ -46,7 +46,7 @@ public class BioFormatsImageThumbnail {
         int resizeHeight = imageHeight;
         Image resizeImage = image;
         if (scale != 1.0) {
-            // resize image if dimension is larger than maximum dimention.
+            // resize image if dimension is different with requrested dimension.
             resizeWidth = (int) (scale * (double) imageWidth);
             resizeHeight = (int) (scale * (double) imageHeight);
             resizeImage = image.getScaledInstance(resizeWidth, resizeHeight, Image.SCALE_AREA_AVERAGING);
@@ -242,8 +242,8 @@ public class BioFormatsImageThumbnail {
             final String format = image.getColorModel().hasAlpha() ? "png" : "jpeg";
             // image = resize(image, 160, 160);
             final String dataUri = getDataUri(image, "image/" + format);
-            // System.out.println(dataUri);
-            saveFile(dataUri, "/var/tmp/thumbnail." + format);
+            System.out.println(dataUri);
+            // saveFile(dataUri, "/var/tmp/thumbnail." + format);
         } catch (final BioFormatsImageException e) {
             System.out.println(e.getMessage());
             System.exit(1);