convert : force output as PDF v1.3 possible ?

[Rumcajs]

Hi,

i use this command to produce a flattended pdf :

convert -quality 100 -density 300 -colorspace CMYK -profile /usr/share/color/icc/CoatedFOGRA27.icc input.pdf output_flattened.pdf

It works pretty good, but its produced a v1.7 pdf file, is it possible to tell convert to produce a v1.3 pdf ?

Cheers

[magick]

ImageMagick returns a PDF version 1.7 when an ICC color profile is embedded. Can you reference documentation that suggests a color profile meets the requirements of PDF version 1.3?

[Rumcajs]

I got almost what i wanted by running :

convert -quality 100 -density 300 -colorspace CMYK input.pdf output_flattened.pdf

without : "-profile /usr/share/color/icc/CoatedFOGRA27.icc" its generate a v1.3 pdf file, v1.3 its very important in printing businessmen because the v1.3 is a requirement for many professional printing units. Our units also accept only "PDF/X­1a: 2001 Akrobat 4­ v1.3" to.

One disadvantage however is the fact that i cannot use the "-profile" parameter :
Lets say the input.pdf has RGB colorspace, then i need to convert it to CMYK for printing, our print units are calibrated for the FOGRA27 colorspace, thats why i will like call it like : "convert -quality 100 -density 300 -colorspace CMYK -profile /usr/share/color/icc/CoatedFOGRA27.icc input.pdf output_flattened.pdf" maybe with one more parameter like -OutPdfVer=1.3 to generate a v1.3 pdf file.