HTML JPG PDF XML APNG
Aspose.Imaging  for Java
J2K

Convert JPG to J2K via Java

Transform JPG into J2K using native Java APIs without needing any image editor or 3rd-party libraries.

How to Convert JPG to J2K Using Java

Converting file formats may seem like a routine task encountered by graphic designers. Yet, underestimating its significance would be a mistake. The evaluation of your work might depend on how swiftly and effectively you tackle this task. Typically, original images need conversion into formats better suited for printing or online publication. If the original image originates from a graphic editor, it might be in vector format. In this scenario, it must be rasterized and converted to a raster format for publishing purposes. You have the choice to save the image in an uncompressed format for optimal quality or convert it to a lossless compressed format to reduce file size. In certain contexts, like web publishing, you can opt for lossy compressed formats. Specially designed algorithms for image data compression permit a significant reduction in file size while preserving acceptable image quality. This facilitates fast image file downloads from the internet. In order to convert JPG to J2K, we’ll use Aspose.Imaging for Java API which is a feature-rich, powerful and easy to use image manipulation and conversion API for Java platform. You can download its latest version directly from Maven and install it within your Maven-based project by adding the following configurations to the pom.xml.

Repository

<repository>
<id>AsposeJavaAPI</id>
<name>Aspose Java API</name>
<url>https://repository.aspose.com/repo/</url>
</repository>

Dependency

<dependency>
<groupId>com.aspose</groupId>
<artifactId>aspose-imaging</artifactId>
<version>version of aspose-imaging API</version>
<classifier>jdk16</classifier>
</dependency>

Steps to Convert JPG to J2K via Java

Developers can easily load & convert JPG files to J2K in just a few lines of code.

  • Load JPG file with Image.load method
  • Create & set the instance of required subclass of ImageOptionsBase (e.g. BmpOptions, PngOptions, etc.)
  • Call the Image.save method
  • Pass file path with J2K extension & object of ImageOptionsBase class

System Requirements

Before running the conversion example code, make sure that you have the following prerequisites:

  • Operating system: Windows or Linux.
  • Development environment: Supports .NET Core 7 and higher, such as Microsoft Visual Studio.

Free App to Convert JPG to J2K

  • Select or drag and drop JPG image
  • Choose format and click Convert button
  • Click Download button to download J2K image
*By uploading your files or using our service you agree with our Terms of Service and Privacy Policy

Check our live demos to convert JPG to J2K

Convert JPG to J2K - Java

import com.aspose.imaging.Image;
import com.aspose.imaging.ImageOptionsBase;
import com.aspose.imaging.fileformats.jpeg2000.Jpeg2000Codec;
import com.aspose.imaging.fileformats.png.PngColorType;
import com.aspose.imaging.fileformats.tiff.enums.TiffExpectedFormat;
import com.aspose.imaging.imageoptions.*;
//This example demonstrates how to convert all supported file formats from one to another
String templatesFolder = "D:\\WorkDir\\";
//Formats that support both - save and load
HashMap<String, ImageOptionsBase> formatsThatSupportExportAndImport = new HashMap<String, ImageOptionsBase>();
formatsThatSupportExportAndImport.put("bmp", new BmpOptions());
formatsThatSupportExportAndImport.put("gif", new GifOptions());
formatsThatSupportExportAndImport.put("dicom", new DicomOptions());
formatsThatSupportExportAndImport.put("emf", new EmfOptions());
formatsThatSupportExportAndImport.put("jpg", new JpegOptions());
formatsThatSupportExportAndImport.put("jpeg", new JpegOptions());
formatsThatSupportExportAndImport.put("jpeg2000", new Jpeg2000Options() );
formatsThatSupportExportAndImport.put("j2k", new Jpeg2000Options() {{ setCodec(Jpeg2000Codec.J2K); }} );
formatsThatSupportExportAndImport.put("jp2", new Jpeg2000Options() {{ setCodec(Jpeg2000Codec.Jp2); }} );
formatsThatSupportExportAndImport.put("png",new PngOptions() {{ setColorType(PngColorType.TruecolorWithAlpha); }});
formatsThatSupportExportAndImport.put("apng", new ApngOptions());
formatsThatSupportExportAndImport.put("svg", new SvgOptions());
formatsThatSupportExportAndImport.put("tiff", new TiffOptions(TiffExpectedFormat.Default));
formatsThatSupportExportAndImport.put("tif", new TiffOptions(TiffExpectedFormat.Default));
formatsThatSupportExportAndImport.put("wmf", new WmfOptions());
formatsThatSupportExportAndImport.put("emz", new EmfOptions() {{ setCompress(true); }});
formatsThatSupportExportAndImport.put("wmz", new WmfOptions() {{ setCompress(true); }});
formatsThatSupportExportAndImport.put("svgz", new SvgOptions(){{ setCompress(true); }});
formatsThatSupportExportAndImport.put("tga", new TgaOptions());
formatsThatSupportExportAndImport.put("webp", new WebPOptions());
formatsThatSupportExportAndImport.put("ico", new IcoOptions());
//Formats that can be only saved
HashMap<String, ImageOptionsBase> formatsOnlyForExport = new HashMap<String, ImageOptionsBase>();
formatsOnlyForExport.put("psd", new PsdOptions());
formatsOnlyForExport.put("dxf", new DxfOptions() {{ setTextAsLines(true); setConvertTextBeziers(true); }} );
formatsOnlyForExport.put("pdf", new PdfOptions());
formatsOnlyForExport.put("html", new Html5CanvasOptions());
//Formats that can be only loaded
List<String> formatsOnlyForImport = Arrays.asList("djvu", "dng", "dib", "eps", "cdr", "cmx", "otg", "odg");
//Get total formats that can be saved
HashMap<String, ImageOptionsBase> exportToFormats = new HashMap<String, ImageOptionsBase>(formatsOnlyForExport);
exportToFormats.putAll(formatsThatSupportExportAndImport);
//Get total formats that can be loaded
List<String> importFormats = new LinkedList<>(formatsOnlyForImport);
importFormats.addAll(formatsThatSupportExportAndImport.keySet());
importFormats.forEach((formatExt) -> {
String inputFile = templatesFolder + "template." + formatExt;
for (Map.Entry<String, ImageOptionsBase> exportFormat : exportToFormats.entrySet())
{
String outputFile = String.format("%s\\%s\\%s-%s-to-%s.%s", templatesFolder, "convert", "convert-", formatExt, exportFormat.getKey(), exportFormat.getKey());
System.out.println(outputFile);
// More about load method can be found at
// https://apireference.aspose.com/imaging/java/com.aspose.imaging/Image#load-java.lang.String-
try (Image image = Image.load(inputFile))
{
ImageOptionsBase exportOptions = exportFormat.getValue().deepClone();
if ((formatExt.equals("emf") || formatExt.equals("emz")) && (exportFormat.getValue() instanceof WmfOptions))
{
EmfRasterizationOptions rasterizationOptions = new EmfRasterizationOptions();
rasterizationOptions.setPageWidth(image.getWidth());
rasterizationOptions.setPageHeight(image.getHeight());
exportOptions.setVectorRasterizationOptions(rasterizationOptions);
}
image.save(outputFile, exportOptions);
}
}
});

JPG What is JPG File Format

A JPEG is a type of image format that is saved using the method of lossy compression. The output image, as result of compression, is a trade-off between storage size and image quality. Users can adjust the compression level to achieve the desired quality level while at the same time reduce the storage size. Image quality is negligibly affected if 10:1 compression is applied to the image. The higher the compression value, the higher the degradation in image quality.

Read More | JPG

J2K What is J2K File Format

A J2K file is an image that is compressed using the wavelet compression instead of DCT compression.

Read More | J2K

Other Supported Conversions

Using Java, one can easily convert different formats including:

BMP (Bitmap Picture)
GIF (Graphical Interchange Format)
DICOM (Digital Imaging & Communications)
EMF (Enhanced Metafile Format)
JP2 (JPEG 2000)
J2K (Wavelet Compressed Image)
JPEG2000 (JPEG 2000)
PNG (Portable Network Graphics)
APNG (Animated Portable Network Graphics)
PSD (Photoshop Document)
DXF (Drawing Interchange Format, or Drawing Exchange Format,)
SVG (Scalable Vector Graphics)
TIFF (Tagged Image Format)
WEBP (Raster Web Image)
WMF (Microsoft Windows Metafile)
PDF (Portable Document Format (PDF))
HTML (HTML5 Canvas)
EMZ (Windows Compressed Enhanced Metafile)
WMZ (Compressed Windows Media Player Skin)
TGA (Targa Graphic)
SVGZ (Compressed version of Scalable Vector Graphics (.SVG) file.)
CANVAS (HTML5 Canvas)
ICO (Windows icon)