Aspose.Slides for Java is a Java component for manipulating PowerPoint presentations. It doesn't require PowerPoint and supports export to PDF, embedding and linking of audio and video frames, slide cloning, thumbnail generation, and presentation features, the ability to extract text from a presentation, and more.

Changes:
This is mainly a maintenance release in which several charting and presentation rendering issues have been addressed. Issues like failing to access the chart data and disturbed chart legends have been addressed. A great deal of improvement has been achieved in terms of presentation rendering and its export to PDF or generating slide thumbnails. Many issues pertaining to rendering of presentation charts, tables, and images, and their exportation to PDF, have been resolved.

URL:
Aspose.Slides for Java – Freecode