devexpress-office-file-api-presentation

Install the DevExpress.Docs.Presentation NuGet package, create a Presentation object, add slides from slide master layouts, set placeholder text, and call SaveDocument with a file stream. It works on .NET 6+ and .NET Framework 4.6.2+ without Office installed.

Call presentation.ExportToPdf with a file path or stream. Pass PdfExportOptions to configure image quality, password encryption, digital signatures, attachments, and document metadata. Note that content is exported as images, so PDF text is not selectable.

Yes, version 26.1+ supports the Chart class for standard types like bar, line, and pie, and ChartEx for Office 2016+ types like waterfall, funnel, and treemap. Series data can be inline arrays or references to an embedded spreadsheet.

It loads and saves PPTX, PPTM, POTX, and POTM Open XML formats. Unsupported files throw a PresentationUnsupportedFormatException. It can also export to PDF and export slides to raster or vector images.

This is a known limitation: SmartArt diagrams, charts, comments, and FillOverlayEffect are not exported to PDF. All content is rasterized as images, so use pre-rendered images as a workaround for these elements.

Yes. Load each presentation and add slides from the source to the target's Slides collection; slide masters transfer automatically. Match the target SlideSize to the source first, or shapes may fall outside the visible slide area.