How to write HEIC image files in Java with JDeli

In this article, I will cover how to write out images as Heic images in Java. We also have a related article covering how to read HEIC files in Java.

ImageIO does not write HEIC file types so you will need to use an external library. We believe that JDeli is the only pure Java implementation available so we will document that. If you are looking for a free solution, we recommend the Nokia library on GitHub (which includes Java wrappers).

What is HEIC?

HEIC stands for “High-Efficiency Image File Format”. It is a complex lossy file format for storing bitmapped images. It was developed by Apple but is an Open Standard.

The filename extension for Heic files is: .heic

How to write an image as a Heic file with JDeli

Step 1 Add JDeli to your class or module path. (download the trial jar).
Step 2 Create a File (or OutputStream) object

File file = new File("/path/to/outputFile.heic"));

Step 3 Pass image, Heic type, and File (or OutputStream) object into write method

JDeli.write(bufferedImage, "heic", file);

In JDeli you can also use a typesafe version

JDeli.write(bufferedImage, OutputFormat.HEIC, file);

or pass in a object for more control over Heic image output, such as level of Compression.

HeicEncoderOptions options = new HeicEncoderOptions();
JDeli.write(bufferedImage, options, file);

Why use JDeli to write HEIC files?

JDeli offers a range of advantages over ImageIO and alternatives, including:

• complete implementation of Heic spec
• implements mirroring, rotation and clapping (ie cropping)
• 100% Java implementation
• no dependencies on other Heic libraries
• highly optimized memory usage
• supports threading

Learn more about JDeli, or download it to try it yourself.

Do you need to work with Images in Java?

Download JDeli here