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Free Spire.Presentation for .NET is a Community Edition of the Spire.Presentation for .NET, which is a totally free PowerPoint API for commercial and personal use. As a standalone C#/VB.NET library, developers can use Free Spire.Presentation for .NET to create, read, write, modify, convert and Print PowerPoint documents from any .NET(C#, VB.NET, ASP.NET, .NET Core) platform. Free Spire.Presentation for .NET is a standalone PowerPoint .NET library and does not depend on Microsoft PowerPoint. It supports both PowerPoint Presentation 97-2003(PPT) and PowerPoint Presentation 2007, 2010, 2013, 2016 and 2019(PPTX). Friendly Reminder: |
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Spire.Presentation for .NET supports PPT, PPS, PPTX and PPSX presentation formats.  |
Free Edition $0
Free version is limited to 10 presentation slides. This limitation is enforced during reading or writing PPT, PPTX. When converting PowerPoint files to PDF, you can only get the first 3 pages of PDF file.  |
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Only Free Spire.Presentation, No Microsoft PowerPoint Automation
As an independent PowerPoint .NET API, Free Spire.Presentation for .NET doesn't need Microsoft PowerPoint installed on the machine. And it is compatible with other .NET applications. |
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Summary of Free Spire.Presentation functions
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Platforms Supported
By using Free Spire.Presentation, developers can build any type of a 32-bit or 64-bit .NET application including C#, VB.NET, ASP.NET, Web Services and WinForms for .NET Framework version from 2.0 to 4.5.
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Convert PowerPoint to PDF
Converting PowerPoint to PDF helps you maintain the layout and formatting of your presentation when viewed on different systems or devices.
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Convert PowerPoint to XPS
XPS is a fixed-layout document format similar to PDF. As such, when you need to print, transfer or archive a PowerPoint document, converting it to XPS format would also be a great option.
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Convert PowerPoint to Image
Compared with PowerPoint presentations, images are easier to view and more user friendly, because they can be opened on almost any applications without the need for Microsoft PowerPoint.
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Create Slide Masters
A slide master controls the design of all the slides based on it. Using a slide master makes it easier to create presentations that look consistent and visually appealing.
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Add a Watermark
Watermarks are used to declare confidentiality, copyright, source, or other attributes of the document, or as a decoration to make the document more attractive. Both text watermarks and image watermarks can be added to presentations.
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Add Speaker Notes
Adding speaker notes to a PowerPoint presentation provides reference material for the speaker when they’re presenting a slideshow, allowing them to stay on track without forgetting the key points to deliver a flawless presentation.
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Digitally Sign PowerPoint Documents
A digital signature provides assurances about the validity and authenticity of your presentation. Once a PowerPoint document is digitally signed, any changes to the document will invalidate the signature.
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Extract Text and Images
If you only need the text and images of a PowerPoint document regardless of their formatting and layout, you can directly extract them from the document.
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Insert Charts
Charts in PowerPoint can help illustrate data, show trends or changes in data over time, and make the whole document more professional and attractive.
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Insert Images and Shapes
Adding pictures and shapes can make your presentations more interesting and engaging. And you can customize your images by cropping, reordering, changing colors or adding other formatting and customize shape according to your own color palette, preferences.
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Insert a SmartArt
SmartArt is a way to combine text, shapes and colors into an image or illustration. SmartArt graphics let you easily create a visual representation of your information.
