PNG Converter
The JDeli Java image conversion library is able to open and export images as PNG files, giving a complete bulk PNG converter between PNG file format and lots of other image file formats.
You can do much more with HEIC files, trial JDeli to find out more…
JDeli can do this in ONE step with the convert method or separately open and export the PNG image.
Batch Convert images to PNG from Command Line or other language
java -jar jdeli.jar --convert png "inputFileOrDir" "outputDir"
Convert into PNG or from a PNG image file in Java
JDeli.convert(File inFile, File outFile);
JDeli.convert(InputStream inFile, OutputStream outfile, String format);
byte[] outputData=JDeli.convert(byte[] inputData, String format);
An additional set of methods allow values to be passed in which can give more control over conversion, depending on the image formats being changed (ie different image compression options).