Am 14.01.2012 04:21, schrieb Philip Webb: > 120113 Florian Philipp wrote: >> Am 13.01.2012 11:32, schrieb Philip Webb: >>> I've been in the habit of creating PDFs of .odt files using LibreOffice. >>> I was reminded of 'ps2pdf', which resulted in : >>> -rw-r--r-- 1 purslow users 34475 Jan 12 07:52 boox.odt >>> -rw-r--r-- 1 purslow users 366711 Jan 13 04:05 boox.pdf >>> -rw-r--r-- 1 purslow purslow 830909 Jan 13 04:07 boox.ps >>> -rw-r--r-- 1 purslow purslow 67184 Jan 13 04:07 boox-test.pdf >>> Both PDFs seem the same when opened with Xpdf or Okular, >>> but the PDF created with LO direct export is 5 times >>> the size of the PDF created with a test run of Ps2pdf ; >>> the .ps file created with LO & then used for the latter is even bigger. >>> Can anyone explain what is going on ? >> Try the pdfdebugger provided by dev-java/pdfbox to inspect both files. > > That needs Java, which I am definitely not going to re-install (smile). >
Well, I'll resist the temptation to start a flamewar over this ;) >> Maybe one of them uses a stupid internal structure. > > OpenOffice was notorious for legacy bloat, so that would make sense. > LO devs have managed to remove a large amount of useless code. > >> I couldn't reproduce this with app-office/libreoffice-3.4.3.2-r1 >> & cups-pdf , which should use the same backend as ps2pdf . >> the files were nearly equal in size, c 60 kB for about 1 page of text. > > My file has 14 pp of simple text. I've now uploaded the files above > & everyone can inspect them & their structure at > > http://www.chass.utoronto.ca/~purslow/test/ > > I've renamed the PDFs to show their origin, ie LibreOffice + Ghostscript. > Perhaps that will allow others to investigate. > > I will also have a look at Cups-pdf & at Willie Wong's suggestions. > > PS the file is a list of books I've noted as worth reading, > so it may have a wider (OT) interest than simply to solve this problem. > I can reproduce the behavior with my LO. I've inspected the files with pdfdebugger. The LO-version really contains more, but nothing which seems to justify the difference. In fact, the content streams of each page seem to be better compressed in th LO version. Cups-PDF creates a smaller PDF than ps2pdf, probably because it outputs PDF-1.5. Otherwise it is identical to the other ghostscript outputs. Out of curiosity, I removed all pictures from an old report I wrote (25 pages) and tested that. There, Cups-PDF creates larger files than LO although the internal structure is similar to what you've provided. So I guess, all we can say is that their performance is inconsistent. Regards, Florian Philipp
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