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Convert DJVU to JPEG via Java

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

How to Convert DJVU to JPEG 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 DJVU to JPEG, 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 DJVU to JPEG via Java

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

  • Load DJVU 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 JPEG extension & object of ImageOptionsBase class

System Requirements

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

  • JDK 1.6 or higher is installed.

Free App to Convert DJVU to JPEG

  • Select or drag and drop DJVU image
  • Choose format and click Convert button
  • Click Download button to download JPEG image

Check our live demos to convert DJVU to JPEG

Convert DJVU to JPEG - Java

DJVU What is DJVU File Format

DjVu, pronounced as “déjà vu”, is a graphics file format intended for scanned documents and books especially those which contain the combination of text, drawings, images and photographs. It was developed by AT&T Labs. It uses multiple techniques like image layer separation of text and background images, progressive loading, arithmetic coding and lossy compression for bitonal images. Since DJVU file can contain compressed yet high-quality colour images, photographs, text, and drawings and can be saved in less space therefore, it's used on web as eBooks, manuals, newspapers, ancient documents, etc.

Read More | DJVU

JPEG What is JPEG 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 | JPEG

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)
JPG (Joint Photographic Experts Group)
JPEG (Joint Photographic Experts Group)
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)