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Known Participant
October 7, 2014
Answered

Color separation when exporting a PDF

  • October 7, 2014
  • 10 replies
  • 37705 views

It's been driving me nuts, ADOBE seems to have forgotten about color separation when using the export to PDF method.  Even quark has this option.

Anyway I was hoping to know if there is a way that I don't know.

Cheers

Correct answer Dov Isaacs

On behalf of Adobe ...

Adobe applications including InDesign, Illustrator, and Photoshop intentionally omitted the capability of initiating a pre-separated PDF workflow. Although one could hack together a pre-separated PDF file by producing PDF via distillation of PostScript (another workflow that we at Adobe most strongly discourage), the concept behind modern PDF publishing workflows is to leave final form content at the highest level of abstraction until it needs to be rendered, whether that rendering is on screen (an inherently RGB device), to 4 colorant CMYK process printing, or high fidelity printing using traditional CMYK colorants plus other colorants such as bright green and orange or light cyan and light magenta as well.

Once you pre-separate PDF, you can't really display the PDF for normal reading, you can't readily search and/or touch up, and you can't change the target printing condition. You also cannot have live transparency in a pre-separated PDF file! And modern native PDF RIPs don't work with such workflows! No ISO PDF/X standard supports such workflows either!

You want or need to preview the separations? Use the separation preview feature of Acrobat (or even the authoring applications).

If you are working with a Luddite print service provider who demands such PDF files or creates them internally, you really need to very seriously consider other print service providers.

          - Dov

10 replies

Participant
May 19, 2025

Outputting seps is also a handy thing to be able to do when you are 

— printing with a risograph machine

— making your own plates for screenprinting

— making your own plates for letterpress jobs

— making your own plates for 2-color jobs

— other totally unprofessional acts of design and print that no one actually does anymore, lol 

 

No ICC color profiles were harmed in the writing of this message. 

fourscoreandseven
Known Participant
May 19, 2025

Too bad we cannot export color separations in a pdf. Seems that Adobe is trying to "help" us and prevent us from doing something stupid in a commercial printing situation. Anyway, I only wanted to do this to show students how color separation works since we are now teaching online and I can't show them my printing plates. Seeing color seps from their own layout gives them an "ahah"! moment to realize what four-color process and spot colors is all about.

Willi Adelberger
Community Expert
Community Expert
May 19, 2025

Show them in print preview (Acrobat Pro or InDesign) the separate plates. You can turn of and on single plates.

littleray_99
Participant
August 3, 2018

Greetings from a "Luddite" small town print shop!  Adobe, may I assure you that there are reasons both current and archaic to allow for producing separated PDF files. For our internal needs, being able to view separations in Acrobat is adequate (we still run a lot of 2-color offset work and it saves me a trip to the pressroom to check my actual plate previews when creating complex 2-color jobs).

However, when we sub-contract for specialty finishes and products this is still a REQUIREMENT of high-tech, conglomerate trade printing outfits for foil stamping, spot UV, etc.  This is because creating a separate PDF "plate" AVOIDS CONFUSION when sending print jobs out of house. They ask this of me... and I understand why. 

Secondly, Here! Here! to those who point out that being snobby is far from helpful. Yes, I admit that we are not on the bleeding edge of technology here.  But that also allows us to produce high-quality print materials to local clients at a price they can afford.  And we do a damn good job at it.  We would price ourselves out of our market if we had to keep up with every latest development and trend in the industry (that includes software too!). We know how best to do our work and if Adobe doesn't care about the needs of a print shop, then they have lost touch with their roots.

Known Participant
April 27, 2016

I realize this thread is 2 years old but I wanted to let you know that I feel your pain, tranceplantt. I also work in publishing and we do a great deal of work with foreign publishers. We are still very much using a separation based workflow, and have the need for Text only PDFs on a daily basis. I'm sure I get as equally frustrated as you with the lack of understanding and often ignorance of the replies to your simple question regarding the ability to be able to export separations.

I stumbled upon this post while searching for info about Quark 2015. I have, unfortunately, just discovered that Quark has removed the export separations functionality from Q10 and above. I have been using Q9 and the ability to export seps was, in my opinion, the last saving grace for Quark.

In the 2 years since you made this original post, has your workflow changed?

rob day
Community Expert
Community Expert
April 27, 2016

In the 2 years since you made this original post, has your workflow changed?

Dan's #10 is the proper—and not very difficult—workflow. Exporting plates is never going to happen, so the only other options are Distiller or a script.

Stephen Marsh
Community Expert
Community Expert
April 27, 2016

Add Enfocus PitStop Pro or PitStop Server to that list of possible options.

Known Participant
October 8, 2014

PDF pass-through printing

PDF Print Engine printer manufactures release new drivers based on Adobe PDFDriver SDK which have the capabilities of handling PDF in the pass-through mode. When such a printer is selected via InDesign, its PPD can indicate that it is a PDF printer (depends on the Printer manufacturer).

Since InDesign can generate a high-quality PDF via PDF export, printing to a PDF printer leverages that functionality, and this high quality PDF is passed on to the printer, rather than via intermediate postscript route.
In general, print quality from applications through PDF Driver is equivalent to (or better than) PostScript printing. PDF printing through the Adobe PDF printer also supports live transparency and ICC color management. At InDesign print dialog, options related to Color Management, Color Separation, and Graphics options are disabled because all the color management operations are done on the device for better quality printout.

I found this on this page: InDesign Help | Preparing PDFs for service providers

Does someone have more information on this method?

I have not find a way on how to do that?  Seems like I can generate a PDF via printer without using postscript? Help please

or should I start a new topic?

rob day
Community Expert
Community Expert
October 8, 2014

At InDesign print dialog, options related to Color Management, Color Separation, and Graphics options are disabled

The help text states that separations are disabled so it doesn't sound like it would help.

Besides, Adobe should be here to help and not tell me how to work... a simple separation option on export would be great

It doesn't seem like Adobe will have any interest in a print feature that addresses a layout problem. The InDesign SDK and scripting tools make this very solvable from the layout rather than the print side. I didn't spend much time with the script I posted and it probably would have problems with complex groups, but there are other ways of going at the problem. A script could also hide every page item that isn't a text frame containing text with the 5th color. That might be better because it wouldn't change the layout structure.

Known Participant
October 8, 2014

Rob Day wrote:

It doesn't seem like Adobe will have any interest in a print feature that addresses a layout problem. The InDesign SDK and scripting tools make this very solvable from the layout rather than the print side.

Who says it's a problem in the layout. The layout is fine.  Just the way it has been done.   Separating the colours on output is simply an option.  What if I wanted to output just the CYAN? I couldn't even do that other than on the screen.

Dov Isaacs
Dov IsaacsCorrect answer
Legend
October 7, 2014

On behalf of Adobe ...

Adobe applications including InDesign, Illustrator, and Photoshop intentionally omitted the capability of initiating a pre-separated PDF workflow. Although one could hack together a pre-separated PDF file by producing PDF via distillation of PostScript (another workflow that we at Adobe most strongly discourage), the concept behind modern PDF publishing workflows is to leave final form content at the highest level of abstraction until it needs to be rendered, whether that rendering is on screen (an inherently RGB device), to 4 colorant CMYK process printing, or high fidelity printing using traditional CMYK colorants plus other colorants such as bright green and orange or light cyan and light magenta as well.

Once you pre-separate PDF, you can't really display the PDF for normal reading, you can't readily search and/or touch up, and you can't change the target printing condition. You also cannot have live transparency in a pre-separated PDF file! And modern native PDF RIPs don't work with such workflows! No ISO PDF/X standard supports such workflows either!

You want or need to preview the separations? Use the separation preview feature of Acrobat (or even the authoring applications).

If you are working with a Luddite print service provider who demands such PDF files or creates them internally, you really need to very seriously consider other print service providers.

          - Dov

- Dov Isaacs, former Adobe Principal Scientist (April 30, 1990 - May 30, 2021)
Known Participant
October 7, 2014

Dov Isaacs wrote:

On behalf of Adobe ...

Adobe applications including InDesign, Illustrator, and Photoshop intentionally omitted the capability of initiating a pre-separated PDF workflow. Although one could hack together a pre-separated PDF file by producing PDF via distillation of PostScript (another workflow that we at Adobe most strongly discourage), the concept behind modern PDF publishing workflows is to leave final form content at the highest level of abstraction until it needs to be rendered, whether that rendering is on screen (an inherently RGB device), to 4 colorant CMYK process printing, or high fidelity printing using traditional CMYK colorants plus other colorants such as bright green and orange or light cyan and light magenta as well.

Once you pre-separate PDF, you can't really display the PDF for normal reading, you can't readily search and/or touch up, and you can't change the target printing condition. You also cannot have live transparency in a pre-separated PDF file! And modern native PDF RIPs don't work with such workflows! No ISO PDF/X standard supports such workflows either!

You want or need to preview the separations? Use the separation preview feature of Acrobat (or even the authoring applications).

If you are working with a Luddite print service provider who demands such PDF files or creates them internally, you really need to very seriously consider other print service providers.

          - Dov

Seems like Adobe is missing the point here.

Read my real life need for it above and you will see that it makes a lot of sense to have this option that I am asking for.  Not all files are perfect, therefor the export in separation mode is just a time saver.

Peter Spier
Community Expert
Community Expert
October 7, 2014

Any printer that cannot ignore the CMYK and output only the language spot plate from a composite PDF (and trap it correctly when they do that) should be out of business by now.

MW Design
Inspiring
October 7, 2014
...Even quark has this option.

That would be, "even Quark use to have this option." Quark in all their wisdom yanked host-based separations in version 10. They may put it back in due to popular request/demand. Only the Shadow knows. I quite often use QXP 9.x for making the seps for a couple local screen printers when the jobs aren't basic vector art done in CorelDraw.

Mike

Known Participant
October 7, 2014

That would be, "even Quark use to have this option." Quark in all their wisdom yanked host-based separations in version 10. They may put it back in due to popular request/demand. Only the Shadow knows. I quite often use QXP 9.x for making the seps for a couple local screen printers when the jobs aren't basic vector art done in CorelDraw.

MW

I know the color separation has been removed in Quark, but in printing.  It's still available in the export option. 

Using the export method in quark, you can select the colour you want to export.  That's a beautiful thing. That's about the only thing good in that program.... anyway back to indesign

BobLevine
Community Expert
Community Expert
October 7, 2014

You’re asking for fairly archaic things here.

You can put in a feature request but you’d need to explain how this would benefit the entire user base and IMO you’re going to have a rough time doing so.

Known Participant
October 7, 2014

You’re asking for fairly archaic things here.

You can put in a feature request but you’d need to explain how this would benefit the entire user base and IMO you’re going to have a rough time doing so.

Bob, it might be archaic, but it's still used a lot in the publishing world. 

in the book world, the new trend is for firms to do books in a co-edition format. The idea is to have one firm do all the work (normally in english). But then other firms from other countries and other languages will simply send a PDF of the text ONLY without the colors (cmyk).  So when I export the PDF I only need ONE color. I do not wish to export the whole CMYK.

Do you understand where I am getting from.

So in simplified terms.  The printer has 4 plates for the colours of the book and will simply change a 5th plate to the desired language.

5000 copies

CMYK plates

5th plate: german text


10 000 copies

French

exactly the same CMYK plates as german

5th plate: switch to the french plate

50 000 copies

English

exactly the same CMYK plates as german

5th plate: switch to the english plate

and so on....

The cost is greatly reduced for everyone, but we need an option to export the TEXT only.

You will simply say, but have the text in a separate layer. That is true, but in reality, it's not all the files that are built like that and most graphic designers will have the text on a separate spot color instead of a separate layer.  Unfortunately when I receive the file it's too late to do the changes.

I hope I make sense, english is not my first language.

Daniel Flavin
Inspiring
October 7, 2014

It's still outdated workflows.

The press is either running cmyk or cmyk +black

If you output just the black plate in a cmyk the black plate is changing. There is no cost change aside running a 4 color vs. 5 color job. (Effectively, in the cmyk scenario, there is one less black plate)

In your multiple language document, if each language were a unique Black plate (Black copy, Black copy 2) the need is only for the Printer (not InDesign user) to output the correct separation form the composite pdf.

Even the above is outdated today. A layered pdf is the efficient method, beyond my scope of knowledge.

The question begs. Why a single pdf black plate? The printer should be able to separate colors. 

Community Expert
October 7, 2014

There is no way exporting. Print postscript/distill is the only way.

Known Participant
October 7, 2014

Jefferey, that's what I thought. The problem with postscript is that it's getting outdated and sometimes doesn't do a good job.

Daniel Flavin
Inspiring
October 7, 2014

It's not a common requirement with modern workflows.

Your best (PC) option would be to Print to Adobe PDF printer.

I'm assuming you need Separations which would be available in the Output tab.

Known Participant
October 7, 2014

I looked in the output tab, but it doesn't work.

Daniel Flavin
Inspiring
October 7, 2014

Do you have the Adobe PDF Printer installed? (Note that the PDF Printer will use the current Quality/Options as set in it's Preferences.)

Do you have any Postscript Printer installed? (If so, select Postscript File for Printer. Select a ppd which allows separations. Note the location of the saved .ps file and pass it through Distiller)