Equisys technical notes

Technical guidance, explanations and fixes for our products

FIX: Tables render incorrectly in PDF files when not using Native Rendering



This Zetafax technical note applies to:

  • Zetafax Server version 17.5 with the Rendering Addon


When attaching a PDF containing tabular information to a fax message with a certain combination of rendering settings (RenderPDFNatively: NO and IGFunc: Diffusion), the rendered image does not match the content of the PDF, for instance, a table may have blank cells instead of the expected textual contents.



This issue was due to a bug in the rendering engine used by the Rendering Addon.


An update is available here to address this issue. This contains an update to the rendering engine components which has improved parsing capabilities for PDF files and other file types.


This behaviour was corrected in the update detailed above.

Last updated: 6th July 2023 (NT) 

Keywords: DOCTIFF, native rendering off, blank table

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