The Infamous JPEG, Now Supercharged for Your Java Projects

JDeli is the pure Java solution for developers working with the JPG format

What is the JPG file format?

Most Widely Used Image Format

JPEG (Joint Photographic Experts Group) is the most common image format, balancing quality with smaller file sizes through lossy compression. Standardized in 1992, it is universally supported across the web, photography, and applications. While efficient and widely compatible, developers often need to account for compression artifacts and color space limitations.

Problems with JPEG files in Java

Java developers commonly run into several frustrating and time-consuming problems:

Compression Artifacts

Repeated editing and saving of JPEGs can introduce visible quality loss and artifacts that are difficult to avoid.

Color Inconsistencies

Images saved in CMYK or YCbCr color spaces can display incorrectly in Java, creating rendering inconsistencies.

Metadata Complexity

Handling EXIF data for orientation, color profiles, or camera details can be unreliable and time-consuming.

Balancing Quality and Size

Maintaining high quality often results in much larger files, while smaller files compromise image clarity.

Read, Write and Convert JPG files in pure Java with JDeli

JDeli helps unlock the potential of the file format with a few lines of Java code:

// Read JPEG files

JDeli.read(File jpegFile);

JDeli.read(byte[] jpegData);

JDeli.read(InputStream jpegStream);
// Write JPEG files

JDeli.write(myBufferedImage, "jpeg");
// Convert to and from JPG files
JDeli.convert(File inFile, File outFile);

JDeli.convert(InputStream inStream, OutputStream outStream, String format);

byte[] outputData=JDeli.convert(byte[] inputData, String format);

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JDeli is a 100% Java image library with no third party code

Read
  • AVIF
  • BMP
  • HEIC
  • GIF
  • PNG
  • JPG
  • JPEG 2000
  • JPEG XL
  • TIFF
  • WEBP
All formats
Write
  • AVIF (soon)
  • BMP
  • HEIC
  • GIF
  • JPG
  • JPEG 2000
  • JPEG XL
  • PNG
  • TIFF
  • WEBP
All formats
Process
  • Blur
  • Brighten
  • Clip
  • Crop
  • Mirror
  • Resize
  • Rotate
  • Sharpen
  • Thumbnail
  • Watermark
All operations
ImageIO integration
  • Works transparently with existing code
  • No DLLs or 3rd party code used
  • Any feature can be enabled/disabled
Learn more
Change image format
  • Direct conversion
  • Translate any supported formats
  • Process/modify image during conversion
Learn more
Compress/Decompress Data
  • Ascii85, AsciiHex, RLE
  • CCITT, DCT, JBIG2, JPX
  • Flate, LZW
Learn more

Beyond JPEG: Support for JPEG XL and JPEG 2000

Later variations of the JPEG format introduce modern features, better compression, and higher quality. These formats are supported in pure Java for advanced imaging workflows.

Format Introduced Compression Key Features Common Uses
JPEG 1992 Lossy Universal support, efficient storage, but no transparency and visible artifacts Web, digital photography, consumer devices
JPEG XL 2021 Lossy & Lossless Superior compression, progressive decoding, wide color gamut, HDR support Modern web, high-quality imaging, long-term archiving
JPEG 2000 2000 Lossy & Lossless Wavelet compression, high fidelity, scalability, supports very large images Medical imaging, broadcasting, digital archives

JDeli handles not only HEIC but other types of file formats as well.

- Joselito M. (Senior Applications Developer at Omaha National)

Why use JDeli for JPEG image support?

1.

Adds JPEG to ImageIO so works with existing code

2.

Uses no native code or third party libraries

3.

Optimised Java code for maximum performance

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