Spire.Presentation 11.8.4 enhances the conversion from PPTX to PDF

2026-08-21 01:53:26

We’re pleased to announce the release of Spire.Presentation for .NET 11.8.4. This update mainly resolves multiple rendering and export defects encountered during PPTX-to-PDF conversion, delivering more stable, accurate and visually consistent document conversion results. More details are as follows.

Here is a list of changes made in this release

Category ID Description
Bug Fix SPIREPPT-3087 Fixes the issue where black boxes appear when converting PowerPoint documents to PDF.
Bug Fix SPIREPPT-3107 Fixes the issue where attachment names are garbled when converting PowerPoint documents to PDF.
Bug Fix SPIREPPT-3170 Fixes the issue where part of the text is covered when converting PowerPoint documents to PDF.
Bug Fix SPIREPPT-3184 Fixes the issue where some shapes are converted to NULL when calling SaveAsSvgInSlide to convert shapes to SVG.
Click the link below to download Spire.Presentation 11.8.4: