Summary: A 100% free .NET PowerPoint API– Free Spire.Presentation for .NET which enables developers to operate PowerPoint documents from any .NET platforms now adds a new feature to support converting presentation slides into XPS in C# and VB.NET.

Hong Kong, Nov 14, 2014, E-iceblue-Your Office Devement Master– releases a new pack version of Spire.Presentation for .NET v2.1.7. It is a totally free, independent and professional.NET library which enables developers to create, read, write, modify, print and convert PowerPoint® documents in C# and VB.NET easily.
Spire.Presentation supports working with PPT, PPS, PPTX and PPSX presentation formats. Developers can export presentation slides to PDF, image (Bitmap, JPG, PNG, EMF, TIFF, GIF and WMF) and XPS. It provides functions such as managing text, image, shapes, tables, animations, audio and video on slides. It also supports SmartArt shape, MSO Charts components and presentation printing.
As an independent PowerPoint .NET component, Spire.Presentation doesn't need Microsoft PowerPoint installed on the machine. And it is compatible with other .NET applications.

Summary of Free Spire.Presentation functions

Convert presentation slides to image, PDF and XPS format.
Create, access, copy, edit, delete slides from scratch and add created slides to presentations.
Working with shapes like lines, rectangles, ellipses and polylines on slides
Insert animation effects to slides and shapes
Insert hyperlink to the shapes and text
Working with pictures, audios, videos in the presentation slide
Working with tables and charts
Add text and handle text formatting
Protect and encrypt presentation slides

Check here for detailed information:
http://www.e-iceblue.com/Introduce/f...component.html
About e-iceblue
E-iceblue Co., Ltd. is a vendor of .NET, Silverlight and WPF development components. The goal of e-iceblue is always to offer high-quality components for reading and writing different formats of office files.
Contact US:
http://www.e-iceblue.com/Misc/maillist.html