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!!!

Why do developers choose JDeli over free alternatives?

1. Works with newer image formats such as AVIF, HEIC, JPEG XL, WEBP (AVIF next release) that are not supported in Java.
2. Better support than alternatives for JPEG, PNG, TIFF.
3. Process images up to 3x faster than ImageIO and other Java image libraries.
4. Prevent JVM crashes caused by native code in other image libraries such as ImageIO.
5. Image security as JDeli processes images on your servers with no calls to any external system or third party library.

// Read an image
BufferedImage bufferedImage = JDeli.read(dicomImageFile);

// Read an image
BufferedImage bufferedImage = JDeli.read(heicImageFile);

// Write an image
JDeli.write(bufferedImage, "heic", outputStreamOrFile);

// Read an image
BufferedImage bufferedImage = JDeli.read(jpegImageFile);

// Write an image
JDeli.write(bufferedImage, "jpeg", outputStreamOrFile);

// Read an image
BufferedImage bufferedImage = JDeli.read(jpeg2000ImageFile);

// Write an image
JDeli.write(bufferedImage, "jpx", outputStreamOrFile);

// Write an image
JDeli.write(bufferedImage, "pdf", outputStreamOrFile);

// Read an image
BufferedImage bufferedImage = JDeli.read(pngImageFile);

// Write an image
JDeli.write(bufferedImage, "png", outputStreamOrFile);

// Read an image
BufferedImage bufferedImage = JDeli.read(tiffImageFile);

// Write an image
JDeli.write(bufferedImage, "tiff", outputStreamOrFile);

// Read an image
BufferedImage bufferedImage = JDeli.read(webpImageFile);

// Write an image
JDeli.write(bufferedImage, "webp", outputStreamOrFile);