diff -r dec0dd934a64 -r 93fa6ce675e5 java/copy-image-resizer/src/cz/frantovo/copyImageResizer/SingleImageResizer.java
--- a/java/copy-image-resizer/src/cz/frantovo/copyImageResizer/SingleImageResizer.java	Mon Nov 17 20:23:58 2014 +0100
+++ b/java/copy-image-resizer/src/cz/frantovo/copyImageResizer/SingleImageResizer.java	Mon Nov 17 20:38:38 2014 +0100
@@ -20,6 +20,7 @@
 import java.awt.Graphics2D;
 import java.awt.image.BufferedImage;
 import java.io.IOException;
+import java.io.InputStream;
 import java.io.OutputStream;
 import java.util.logging.Level;
 import java.util.logging.Logger;
@@ -34,11 +35,27 @@
 
 	private static final Logger log = Logger.getLogger(SingleImageResizer.class.getName());
 
-	public void resize(BufferedImage input, OutputStream output, SizeSpecification size, ImageFormat outputFormat) throws ResizeException {
+	/**
+	 *
+	 * @param input
+	 * @param output
+	 * @param size
+	 * @param outputFormat
+	 * @return whether image was resized → if false, you should just copy the image after calling
+	 * this method. Image is resized if larger than requested size or if {@linkplain SizeSpecification#isResizeSmaller()
+	 * }.
+	 * @throws ResizeException
+	 */
+	public boolean resize(InputStream input, OutputStream output, SizeSpecification size, ImageFormat outputFormat) throws ResizeException {
 		try {
-			BufferedImage resized = resize(input, size.getWidth(), size.getHeight(), input.getType());
-
-			ImageIO.write(resized, outputFormat.getFormat(), output);
+			BufferedImage image = readImage(input);
+			if (shouldResize(image, size)) {
+				BufferedImage resized = resize(image, size.getWidth(), size.getHeight(), image.getType());
+				ImageIO.write(resized, outputFormat.getFormat(), output);
+				return true;
+			} else {
+				return false;
+			}
 		} catch (IOException e) {
 			throw new ResizeException("Error while resizing image", e);
 		}
@@ -71,6 +88,22 @@
 		return resized;
 	}
 
+	private static BufferedImage readImage(InputStream input) throws ResizeException {
+		try {
+			return ImageIO.read(input);
+		} catch (IOException e) {
+			throw new ResizeException("Unable to read image from stream", e);
+		}
+	}
+
+	private static boolean shouldResize(BufferedImage input, SizeSpecification requested) {
+		if (requested.isResizeSmaller()) {
+			return input.getHeight() != requested.getHeight() || input.getWidth() != requested.getWidth();
+		} else {
+			return input.getHeight() > requested.getHeight() || input.getWidth() > requested.getWidth();
+		}
+	}
+
 	public static enum ImageFormat {
 
 		JPEG("jpg", Pattern.compile(".*\\.(jpg|jpeg)$", Pattern.CASE_INSENSITIVE)),