I am a representative of Aspose.Cells product, the component does support XLS/Xlsx - to - HTML conversion, also it supports to create, manage, manipulate or even convert to all MS Excel (97-2010) file formats, e.g XLS, XLSX, XLSM, XLSB, XLST, CSV, ODS, Tab delimited, SpreadsheetML(2003), PDF etc. See the sample code below using Aspose.Cells APIs:
Thanks for your inquiry. I’m a representative from the Aspose.Words team. With Aspose.Words, you can convert any Word document (doc/docx/rtf etc) to HTML format by using the following two liner code:
I am representing Aspose.Slides. I regret to share that at the moment the support for exporting PPT/PPTX to HTML is currently unavailable in Aspose.Slides for .NET/Java. An issue with ID SLIDESNET-31251 has been created in our issue tracking system to provide this feature support. This issue is likely to be resolved in Aspose.Slides for .NET 6.1.0, which is scheduled by the end of this month. We will share the further updates with you once they are available.