@GauravBhardwaj,
Using newer versions of Aspose.Cells, you may directly convert an Excel file to PPTX with highest fidelity and precision. You may primarily use the Workbook.Save method with the appropriate SaveFormat enumeration for the task. See the (.NET) document for your reference: C# EXCEL to POWERPOINT - EXCEL to POWERPOINT Converter | products.aspose.com
To convert an Excel file to PPTX format using Aspose.Cells for Java, you can use the Workbook.save method and specify the output format as SaveFormat.PPTX. A detailed guide with example code is available in the official documentation: Convert Excel to PowerPoint using Java.
We recommend you to download the latest version of Aspose.Cells here:
Please feel free to write us back if you have questions or comments.