diff --git a/src/org/im4java/core/IMOps.java b/src/org/im4java/core/IMOps.java
index 0db07c1..024532b 100644
--- a/src/org/im4java/core/IMOps.java
+++ b/src/org/im4java/core/IMOps.java
@@ -11911,6 +11911,30 @@ public IMOps resize(Integer width) {
     return this;
   }
 
+  //////////////////////////////////////////////////////////////////////////////
+
+  /**
+     Add option -resize % to the ImageMagick commandline
+     (see the documentation of ImageMagick for details).
+  */
+
+  public IMOps percentageResize(Integer width) {
+
+    String       oper;                      // only used in some methods
+    StringBuffer buf = new StringBuffer();  // local buffer for option-args
+    iCmdArgs.add("-resize");
+
+    if (width != null) {
+      buf.append(width.toString());
+      buf.append("%");
+    }
+    if (buf.length()>0) {
+      iCmdArgs.add(buf.toString());
+    }
+    return this;
+  }
+
+
   //////////////////////////////////////////////////////////////////////////////
 
   /**