diff --git a/src/main/java/jp/riken/neurodata/tools/BioFormatsImageInfo.java b/src/main/java/jp/riken/neurodata/tools/BioFormatsImageInfo.java
index 0c4615b..aaee5cf 100644
--- a/src/main/java/jp/riken/neurodata/tools/BioFormatsImageInfo.java
+++ b/src/main/java/jp/riken/neurodata/tools/BioFormatsImageInfo.java
@@ -248,17 +248,34 @@ public class BioFormatsImageInfo {
         boolean status = true;
         String message = "";
         String format = "";
+        boolean metadataON = true;
+        boolean thumbnailON = true;
+        String path = "";
         final Map<String, Object> metadata = new LinkedHashMap<String, Object>();
         final Map<String, Object> thumbnail = new LinkedHashMap<String, Object>();
-        if (args.length != 1) {
-            status = false;
-            message = "filename argument required";
+        if (args.length == 1) {
+            path = args[0];
+        } else if (args.length == 2) {
+            if (args[0].startsWith("-")) {
+                metadataON = args[0].toUpperCase().contains("M");
+                thumbnailON = args[0].toUpperCase().contains("T");
+            }
+            path = args[1];
         } else {
-            final String path = args[0];
+            status = false;
+            message = "invalid parameters";
+            message += "\nUsage ./target/dist/bin/bioformats-imageinfo \"[OPTION]\" \"[path to image file]\"";
+            message += "\n-M output metadata\n-T output thumbnail";
+        }
+        if (status) {
             try {
                 DebugTools.enableLogging("OFF");
-                format = readMetadata(path, metadata);
-                BioFormatsImageThumbnail.readThumbnail(path, thumbnail);
+                if (metadataON) {
+                    format = readMetadata(path, metadata);
+                }
+                if (thumbnailON) {
+                    BioFormatsImageThumbnail.readThumbnail(path, thumbnail);
+                }
             } catch (Throwable t) {
                 status = false;
                 message = t.getMessage();