Convert JPG to JPEG2000

The JDeli Java image conversion library comes with JPEG support makes it very easy to convert JPEG to JPEG2000 image files in Java and other languages/scripts.

To run the code examples you will need to download the JDeli jar:

Download JDeli

Convert JPEG to JPEG2000 in one line of code

The JDeli.convert() methods allow you to save JPEG as JPEG2000 in just ONE line of code!

Using File

JDeli.convert(File inFile, File outFile);
JDeli.convert(File inFile, EncoderOptions encoderOptions, File outfile);
JDeli.convert(File inFile, File outfile, ImageProcessingOps imageProcessingOps);

Using InputStream and OutputStream

JDeli.convert(InputStream inputStream, OutputStream outputStream, "jpx");
JDeli.convert(InputStream inputStream, EncoderOptions encoderOptions, OutputStream outputStream);
JDeli.convert(InputStream inputStream, OutputStream outputStream, ImageProcessingOps imageProcessingOps);

Using byte[]

byte[] outputData = JDeli.convert(byte[] inputData, "jpx");
byte[] outputData = JDeli.convert(byte[] inputData, EncoderOptions encoderOptions);
byte[] outputData = JDeli.convert(byte[] inputData, "jpx", ImageProcessingOps imageProcessingOps);

Batch convert JPEG to JPEG2000 from command line

Change image formats from command line or bash, bat, and powershell scripts. This method can also be used to invoke JDeli from any programming language that allows you to create a child process.

java -jar jdeli.jar --convert jpx "inputFileOrDir" "outputDir"

How to convert from JPEG into JPEG2000 in Java as separate steps

Sometimes there is a requirement to convert between formats as separate steps. JDeli also allows the image to be read in as a BufferedImage and then written out later.

1. Read JPEG image into Java

   BufferedImage bufferedImage = JDeli.read(new File("jpgImageFile.jpg"));  
   

2. Process image if needed (scale, sharpen, lighten, watermark, etc)

   bufferedImage = operations.apply(BufferedImage bufferedImage); // Optional
   

3. Write out BufferedImage as JPEG2000 image file

   JDeli.write(bufferedImage, "jpx", new File("jpxImageFile.jpx"));
   

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