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How to set version 1.3 of output pdf after updating text boxes inside an existing pdf


We are using aspose.pdf to update certain fields in existing pdf document.

Pdf version is 1.3 before updating the fields, and it gets changed to 1.5 after flushing it to web.

Also why it adds following additional fonts in the pdf:
  • Helvetica (NOT embedded)
  • Zapfdingbats (NOT embedded)
Is there a way to set the desired version of output pdf to 1.3 and not add these additional fonts.

Hi Adeogun,

Thanks for contacting support.

Aspose.Pdf for .NET supports the feature to create PDF file in particular PDF version or you can also update the version of any existing PDF file. Please take a look over following code snippet.


load source PDF file

Document doc = new Document("input.pdf");

// set PDF file output version as v1.3

doc.Convert(new MemoryStream(), PdfFormat.v_1_3, ConvertErrorAction.Delete);

// save the resultant file


Besides this, you can also remove / replace fonts in PDF document by following instructions specified over

In case you still face any issue, please share the resource files and code snippet which you are using so that we can test the scenario at our end. We are sorry for this inconvenience.