I have to say that I remain confused about the intent statement. Let me explain my confusion. Let's say my preamble says: \setupbackend [format=PDF/X-1a:2001, intent=default] (or I leave the intent blank), using the latest Context version 2025.04.28 14:29 LMTX, my log file tells me, amongst other things: backend > profiles > using color intent 'sRGB-v4.icc' backend > profiles > using icc profiles 'sRGB-v4.icc,CGATS001Compat-v2-micro.icc,sGrey-v4.icc' backend > profiles > forcing pdf version 1.3, compression level 3, object compression disabled backend > profiles > permitted colorspaces: rgb 'yes', cmyk 'yes' colors > defining > supported models: gray 'true', rgb 'true', cmyk 'true', spot 'true' transparencies > support > transparency is supported *but I thought that rgb and transparency were not appropriate for PDF/X. Am I right about that?* If I change intent to one of the color profiles listed on https://wiki.contextgarden.net/Input_and_compilation/PDF/PDFX all of them cause an error, either a 'fatal error' which prevents compilation (such as SWOP2006_Coated3v2.icc does) or the file compiles, as in the case, say, of ISO_Uncoated.icc, but the log reads: backend > profiles > error, couldn't locate profile 'ISO_Uncoated.icc' backend > profiles > invalid output intent 'ISO_Uncoated.icc' There is clearly something I do not understand about how I should indicate the intent. If the items on the web page indicated above are 'pre-defined output intents', then why don't they work for me? Can someone show me exactly how I should fill out the intent= part of \setupbackend so that I get a valid PDF/X, or indeed can I simply ignore it and just put in default? Anything I send to print is for grayscale or BW printing, not color. What I currently do is to use an older 2022 version of ConTeXt where I have the SWOP profile, and I think it is simply ignored. It certainly does not cause compilation issues. but the more recent versions do. Julian . On 17/5/25 16:20, Pablo Rodriguez via ntg-context wrote:
On 5/17/25 07:00, jbf wrote:
[...] Recently I set up a separate more recent 2025 version of ConTeXt, and I get an error with the above intent statement. If I remove intent entirely, everything compiles correctly. Hi Julian,
I think this is intended.
[...] Two questions:
(1) what has changed with the latest ConTeXt that causes this error with that color profile? https://www.pragma-ade.com/general/manuals/standards.pdf#page=2 (also included in the distribution).
This includes the explanation of the automatic configuration of intents.
Just in case it might help,
Pablo ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki!
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