Java JPEG Reader

The JDeli Java image library includes a JPEG Reader to read JPEG images into Java. The JPEG Decoder is written in 100% Java with no dependencies.

Key information:

• 100% Java solution. No dlls or dependencies on native code
• ColorSpace: GrayScale, RGB, CMYK, YCCK images
• Bits Per Sample: 8, 12-bit precision

Quick start:

JDeli can automatically detect the file type and will use the JPEG File Reader

BufferedImage image = JDeli.read(jpegImageFile);

or

JpegDecoder decoder = new JpegDecoder();
BufferedImage image = decoder.read(jpegData);

See the full Javadoc.

Performance comparisons:

These figures were generated using jmh (as documented on our blog) with a standard set of images (also documented). They should be easy to replicate if you wish to validate, the code is on GitHub.

The higher the number, the better.

Mode: Throughput Count: 25 Units: ops/s

Tested on 2021 14inch M1 MacBook Pro using JDK 18.0.1.1