How to crop an image in Java

In this article, I will show you how to crop an image in Java using just ImageIO or JDeli.

Crop an image in Java with:

ImageIO

1. Load the image file using Java ImageIO (which is built into Java)

   BufferedImage image = ImageIO.read(new File("C:\\path\\to\\kitten.jpg"));

2. Get a cropped version (x, y, width, height) (0,0 is top left corner)

   BufferedImage crop = image.getSubimage(0,0, 100, 100);

3. Save the image back to a File

   ImageIO.write(crop, "JPEG", new File("C:\\path\\to\\picture.jpeg"));

Note it is important to save the image before applying any other changes as the BufferedImage object is shared between the original and new crop object.

JDeli

1. Create a Crop ImageOperation in JDeli (here is how to setup JDeli)

   ImageProcessingOperations imageOps = new ImageProcessingOperations();
imageOps.crop(new Rectangle(0, 0, 100, 100)); //you can add other Operations as well

2. Get a cropped version (x, y, width, height) (0,0 is top left corner)

   JDeli.convert(new File("C:\\path\\to\\picture.jpeg"), new File("C:\\path\\to\\crop.jpeg"), imageOps);


And that is all you need to do!!!

Download your JDeli guide:

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Start reading and writing images with one line of code

Read: BufferedImage image = JDeli.read(streamOrFile);

Write: JDeli.write(myBufferedImage, OutputFormat.HEIC, outputStreamOrFile)

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