http://www.quickpdf.org/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 04 Apr 2026 19:58:54 +0000 Thu, 09 Apr 2015 22:56:42 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.01 360 www.quickpdf.org/forum/RSS_post_feed.asp?TID=3100 http://www.quickpdf.org/forum/forum_images/QPDF_Forum_Title.png http://www.quickpdf.org/forum/ http://www.quickpdf.org/forum/transparent-pdfs_topic3100_post12432.html#12432 Author: Alan
Subject: 3100
Posted: 09 Apr 15 at 10:56PM

New user here!

Downloaded the V11 trial as I believe this may be a suitable product fro what I'm trying to do.
I'm looking to convert PDF to PNG but preserving the transparent background in the PDF, as found if the PDF is opened in PhotoShop.

So far the functions appear to render a solid background (white).
Have been trying the DLL version on windows.

DPLLoadFromFile
DPLRenderDocumentToFile

These work with both the gdi and DPLR renderers using DPLSelectRenderer
but I just get a PNG without an alpha channel
original PDF is RGB + alpha
I'm obviously missing something simple but searching the help and forums is bringing nothing up

Alan

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