Planet PDF Forum Archive

Planet PDF ForumWowsers! This is page is old, head to the LIVE Planet PDF Forum. It features more than 10 conferences, covering everything from beginner to in-depth developer and pre-press discussions. If you wish to continue... one & two archive covers 1999-2011 (160,000 pages).

New Forum | Previous | Next | (P-PDF) Developers

Topic: Changing RGB colors to spot colors programmatically?
Conf: (P-PDF) Developers, Msg: 92130
From: bgalbs
Date: 7/16/2003 07:20 AM

I'm currently generating PDFs with FOP. FOP doesn't support specifying spot colors; whether this is due to an XSL-FO limitation or not I cannot say.

I'd like to therefore specify a certain RGB color value in my XSL-FO file, and then post-process the PDF to replace the RGB color value with a spot color value.

I tried diff'ing two different PDFs to see what changed, nearly the entire file had been modified. Wacky.

I could try to grok the PDF spec, but would like to avoid that time expenditure if possible.

I parsed through the PDF by hand, looking for the values, but if they're specified in plain text, they're sufficiently non-intuitive as to have baffled me.

Can anyone clue me in as to how I might do this in a way agnostic of any particular programming language? Is modifying the PDF by hand a bad way to go? Can this operation be done with the Java iText library?


Ben Galbraith

PDF In-Depth Free Product Trials Ubiquitous PDF

Debenu Aerialist

The ultimate plug-in for Adobe Acrobat. Advanced splitting, merging, stamping, bookmarking, and link...

Download free demo

Debenu PDF Tools Pro

It's simple to use and will let you preview and edit PDF files, it's a Windows application that makes...

Download free demo

Five visions of a PDF Day

In the world of PDFs or as we like to say Planet (of) PDF, a year isn't a real PDF year without an intense few days of industry knowledge sharing.

May 15, 2018
Platinum Sponsor

Search Planet PDF
more searching options...
Planet PDF Newsletter
Most Popular Articles
Featured Product

Debenu PDF Aerialist

The ultimate plug-in for Adobe Acrobat. Advanced splitting, merging, stamping, bookmarking, and link control. Take Acrobat to the next level.


Adding a PDF Stamp Comment

OK, so you want to stamp your document. Maybe you need to give reviewers some advice about the document's status or sensitivity. This tip from author Ted Padova demonstrates how to add stamps with the Stamp Tool along with related comments.