Concatenating files creates file 5x and greater than source! Help?

Three files about 20k each concatenate to a single file 297k!? Using latest v2.1.3 of Aspose.Pdf.Kit eval. No properties or controls for Linearization or compression could be found (like ActivePDF and others have) -- any ideas?

Thanks.

Can you please privode the source documents and let us test it? If it is a bug we will try to fix it soon.

Now this is a known issue. Please refer to Merge Document size .