Hi,
When the document is converted from Excel to pdf, a blank page is added to the document.
I attached the original file and corrupted file. We are using Aspose.Excell 19.1.5 version. Thanks.
Please try our latest version/fix: Aspose.Cells v19.3.x.
If you still find the issue with v19.3.x, kindly attach your template file and output PDF file (you have not attached the files in your post), we will check it soon. Also, zip the files prior attaching.