This is the last version of OpenViewerFX that included the image processing classes (notably the PNG Quantizer) that are now part of JDeli

http://mvnrepository.com/artifact/org.jpedal/OpenViewerFX/6.6.14

https://search.maven.org/remotecontent?filepath=org/jpedal/OpenViewerFX/6.6.14/OpenViewerFX-6.6.14.pom https://search.maven.org/remotecontent?filepath=org/jpedal/OpenViewerFX/6.6.14/OpenViewerFX-6.6.14.jar https://search.maven.org/remotecontent?filepath=org/jpedal/OpenViewerFX/6.6.14/OpenViewerFX-6.6.14-javadoc.jar https://search.maven.org/remotecontent?filepath=org/jpedal/OpenViewerFX/6.6.14/OpenViewerFX-6.6.14-sources.jar