Aspose has announced the release of its own PDF rendering engine which gives users the power to save PowerPoint presentations to PDF.
Aspose.Slides for .NET 2.9 enables users to create, read, write and modify PowerPoint documents without using MS PowerPoint. The .NET release also offers the ability to save PowerPoint PPT slides to PDF and supports additional PowerPoint formats including: PPT, POT, and PPS.
Users can also create, access, copy, edit and delete slides in the presentations and the component offers adding and modification of audio and video frames and saves presentations as streams or SVG format, according to the company.
An evaluation version of the software can be found here.
OK, so you want to stamp your document. Maybe you need to give reviewers some advice about the document's status or sensitivity. This tip from author Ted Padova demonstrates how to add stamps with the Stamp Tool along with related comments.