How to write JPEG 2000 Images in Java

In this article I will show you how to write JPEG 2000 images in Java. We also have a related article covering how to read JPEG 2000 files in Java.

ImageIO is able to write images as JPEG 2000 files (jp2 format only), but it offers very little control over the process or the output. We added JPEG 2000 support to our JDeli Image library so we could get quality JPEG 2000 output. In this article, we show you how to use either JDeli or ImageIO and cover the benefits of JDeli.

How to write an image as a JPEG 2000 file in ImageIO

1. ImageIO will need the JAI_ImageIO plugin installed.
2. Create a File (or OutputStream) object for the JPEG2000 output.

   File file = new File("/path/to/outputFile.jp2"));

3. Pass image, jpg type and File (or OutputStream) object into write method

   ImageIO.write(bufferedImage, "jpeg2000", file);

How to write an image as a JPEG 2000 file with JDeli

1. Add JDeli to your class or module path. (download link to the trial jar).
2. Create a File (or OutputStream) object

   File file = new File("/path/to/outputFile.jp2"));

3. Pass image, JPEG2000 type and File (or OutputStream) object into write method

   JDeli.write(bufferedImage, "jp2", file);

In JDeli you can also use a typesafe version

JDeli.write(bufferedImage, OutputFormat.JPEG2000, file);

or pass in a Jpeg2000EncoderOptions object for more control over JPEG2000 image output such as level of Compression.

Jpeg2000EncoderOptions options = new Jpeg2000EncoderOptions();
JDeli.write(bufferedImage, options, file);

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);