Debenu Quick PDF Library - PDF SDK Community Forum : Image quality settings in RenderToFIle

Debenu Quick PDF Library - PDF SDK Community Forum : Image quality settings in RenderToFIle http://www.quickpdf.org/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Mon, 27 Apr 2026 05:16:20 +0000 Tue, 04 Sep 2012 12:32:28 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.01 360 www.quickpdf.org/forum/RSS_post_feed.asp?TID=2390 <![CDATA[Debenu Quick PDF Library - PDF SDK Community Forum]]> http://www.quickpdf.org/forum/forum_images/QPDF_Forum_Title.png http://www.quickpdf.org/forum/ <![CDATA[Image quality settings in RenderToFIle : We have many customers using...]]> http://www.quickpdf.org/forum/image-quality-settings-in-rendertofile_topic2390_post10081.html#10081 Author: AndrewC
Subject: 2390
Posted: 04 Sep 12 at 12:32PM

We have many customers using GDI+ with Windows XP and Server 2003 without problems.

GDI+ on XP doesn'tt support all available TIFF formats. G4 Tiff export is only available when using GDI+ with Vista, XP, Server 2008.

If you posted the code you are using as well as the PDF you were trying to export to a BMP file then we might be able to work out why it is crashing ? Which version of QPL were you using ?

It might be easiest to create a support ticket to http://www.quickpdflibrary.com/support/support-query.php and then attach the files when you get a ticket number.

Quick PDF Library can export to 10 different formats. QPL is primarily a PDF library and not a specialised graphics library. If we wanted to support every different type of image format, type, dithering mode etc then it would require a lot of work and customers would be continually asking for more complex options. GDI+ doesn't support all the required options either. We also need to keep the overall size of the library down. If we had to link in with LibTIFF, LibPNG, LibJPEG ... then the library would be much larger.

Andrew

]]> Tue, 04 Sep 2012 12:32:28 +0000 http://www.quickpdf.org/forum/image-quality-settings-in-rendertofile_topic2390_post10081.html#10081 <![CDATA[Image quality settings in RenderToFIle : Thanks..@Ingo: I usually look...]]> http://www.quickpdf.org/forum/image-quality-settings-in-rendertofile_topic2390_post10080.html#10080 Author: francescogro
Subject: 2390
Posted: 04 Sep 12 at 11:44AM

Thanks..

@Ingo: I usually look in the Reference Manuals before asking in forums.. I just didnt' find anything.

@AndrewC: sadly, GDI+ crashes on WinXp and Win2003 server while using the bitmap.save method. I will try some other components..

By the way, it's weird QP doesn't give more exporting options.. :(

]]> Tue, 04 Sep 2012 11:44:07 +0000 http://www.quickpdf.org/forum/image-quality-settings-in-rendertofile_topic2390_post10080.html#10080 <![CDATA[Image quality settings in RenderToFIle : QPL can currently only output...]]> http://www.quickpdf.org/forum/image-quality-settings-in-rendertofile_topic2390_post10051.html#10051 Author: AndrewC
Subject: 2390
Posted: 30 Aug 12 at 8:04AM

QPL can currently only output 24bit LZW TIFF's or 1 bit Group 4 TIFF's. There are no other options currently available. I would suggest using a library such as LibTIFF to convert and downscale the image to the required quality. Another option is to use GDI+ directly to perform the conversion.

There a many different types conversion filters and parameters to support and this is better handled with a quality graphics library such as GDI+ or LibTIFF.

Andrew.

]]> Thu, 30 Aug 2012 08:04:15 +0000 http://www.quickpdf.org/forum/image-quality-settings-in-rendertofile_topic2390_post10051.html#10051 <![CDATA[Image quality settings in RenderToFIle : Hi Francesco!Have a look in the...]]> http://www.quickpdf.org/forum/image-quality-settings-in-rendertofile_topic2390_post10044.html#10044 Author: Ingo
Subject: 2390
Posted: 29 Aug 12 at 7:57PM

Hi Francesco!

Have a look in the online reference...
There are all options for RenderPageToFile listed:
http://www.quickpdflibrary.com/help/quickpdf/RenderPageToFile.php
There's a "memory smart" DARenderPageToFile, too ;-)
I think a few tries from your side and you'll have it.

Cheers and welcome here,
Ingo

]]> Wed, 29 Aug 2012 19:57:25 +0000 http://www.quickpdf.org/forum/image-quality-settings-in-rendertofile_topic2390_post10044.html#10044 <![CDATA[Image quality settings in RenderToFIle : Hello, I have a problem..I need...]]> http://www.quickpdf.org/forum/image-quality-settings-in-rendertofile_topic2390_post10042.html#10042 Author: francescogro
Subject: 2390
Posted: 29 Aug 12 at 5:11PM

Hello, I have a problem..

I need to convert a PDF file to TIFF images, keeping the size as low as possibile.

With an older library, I used to set options like greyscale images (instead of RGB), just 4 bits of color depth..

Can I set these options in QuickPdf? I didn't find anything..

Thanks a lot

]]> Wed, 29 Aug 2012 17:11:22 +0000 http://www.quickpdf.org/forum/image-quality-settings-in-rendertofile_topic2390_post10042.html#10042