I need help - I can help - TIFF To PDF, size jump

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TIFF To PDF, size jump

Printed From: Debenu Quick PDF Library - PDF SDK Community Forum
Category: For Users of the Library
Forum Name: I need help - I can help
Forum Description: Problems and solutions while programming with the Debenu Quick PDF Library and Debenu PDF Viewer SDK
URL: http://www.quickpdf.org/forum/forum_posts.asp?TID=1881
Printed Date: 12 May 24 at 1:21AM
Software Version: Web Wiz Forums 11.01 - http://www.webwizforums.com

Topic: TIFF To PDF, size jump

Posted By: agent86
Subject: TIFF To PDF, size jump
Date Posted: 10 Jul 11 at 4:25AM

Delphi 7

QuickPDF717

2 issues...

1. When I convert files from high resolution TIFF to PDF there is a huge jump in file size...

296 kb >>> 505 kb

786 kb >>> 1,710 kb

305 kb >>> 2,224 kb

Any hints on how to keep my file size down?

2. Any general infomation on keeping PDF file sizes down with high reolution images on them?

Thanks...

Replies:

Posted By: Rowan
Date Posted: 10 Jul 11 at 9:35AM

There are a couple of things you can try. You can try calling the CompressImages function to see if it will compress the image data. Only image data which supports flate compression can be compressed.

You can also try using the FitImage or DrawScaledImage function instead of the DrawImage function so that the image area size is reduced when it is added to the PDF.

Posted By: AndrewC
Date Posted: 11 Jul 11 at 3:02PM

The 7.25 version of QuickPDF can now import TIFF images and retain the Group 3 / Group 4 or LZW compression that is in the original files. QPL 7.24 and earlier would decompress the image and only compress the image with Flate compressing if CompressImages = 1 and therefore the file sizes were not optimal.

The 7.25 update can be downloaded from http://www.quickpdflibrary.com/products/quickpdf/updates.php - http://www.quickpdflibrary.com/products/quickpdf/updates.php and is a free upgrade from any 7.xx version.

Andrew.

Posted By: bart_bender
Date Posted: 02 Nov 11 at 9:34AM

Hello Andrew

Is it that we have possible the same bug in the version 8.12?
I'm testing with a PDF document with three embeded images (3 pages).
The original has 737 Kb and the new clone has got 1551Kb

Sorry by the english

Best Regards

Posted By: AndrewC
Date Posted: 02 Nov 11 at 10:18AM

It would depend on the images. I would need to see the TIFF and the PDF to analyse what is happening.

If you open a support case at http://www.quickpdflibrary.com/support/support-query.php - http://www.quickpdflibrary.com/support/support-query.php you can then send me the files after you receive a case number.

Andrew.