On 3/4/2025 6:49 PM, Pablo Rodriguez via ntg-context wrote:

Dear list,

I create booklets with the following source:

\setuppapersize[A5, landscape][A4] \setuparranging[2UP] \setuplayout[page] \setuppagenumbering[alternative=doublesided] \setupinteractionscreen[option={landscape,paper}] \starttext \def\Doc{xml-mkiv.pdf} \getfiguredimensions[\Doc] \dorecurse{\noffigurepages} {\externalfigure[\Doc][page=\recurselevel, width=\textwidth]} \stoptext

In this case, I need to impose the resulting PDF file again:

\setuppapersize[A5, landscape][A4] \setuparranging[2TOP] \setuplayout[page] \setuppagenumbering[alternative=doublesided] \setupinteractionscreen[option={portrait,paper}] \starttext \def\Doc{booklet.pdf} \getfiguredimensions[\Doc] \dorecurse{\noffigurepages} {\externalfigure[\Doc][page=\recurselevel, width=\textwidth] \externalfigure[\Doc][page=\recurselevel, width=\textwidth]} \stoptext

Generating this second booklet (from the same PDF document), LMTX generates a resulting PDF document which is four times bigger than the one generated by LuaTeX.

In fact, these are the file sizes:

1.2M Mar 4 18:38 xmlpdf-lmtx.pdf 321K Mar 4 18:41 xmlpdf-luatex.pdf

It seems as LMTX was (almost) disabling PDF compression on the second imposition.

Would anyone be so kind to confirm this issue?

indeed there in the second one compression seems to be turned off for the included streams xml-mkiv.pdf 268.614 one.pdf 328,094 two.pdf 1,206,034 after fixing this here (mkxl): one.pdf 328,093 two.pdf 369,055 btw, --luatex (mkiv) gives: one.pdf 413.981 two.pdf 499.895 processing xml-mkiv in lmtx actually gives a bit larger file (for good reasons): xml-mkiv.pdf 283,611 one.pdf 330,795 two.pdf 373,146 ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------