Re: Reduce size of PDF files when inc. in *TeX docs (issue 194090043 by address@hidden)

[Knut Petersen]

On 14.01.2015 08:15, address@hidden wrote:
> Hmm.  I can't find in your description that `--bigpdfs' creates *big*
> output files that get later reduced to small one by running ghostscript
> again.
>
> https://codereview.appspot.com/194090043/

No? Have a look at the patch sent to lilypond-devel on 8-1 . There I wrote:

   With this patch pdfs generated by lilypond are much bigger,
   but if you include more than two of them in a TeX document and
   feed the pdfs to ghostscripts pdfwrite device, the resulting
   pdf is much smaller. The files produced by ghostscript can
   then be processed by pdfsizeopt.py for even better results.
   One example: notation.pdf of lilypond 2.19.16

      28.0 MB original size
     300.0 MB built with --bigpdf enabled
       5.9 MB as above + postprocessing with gs
       4.3 MB as above + postprocessing with gs and pdfsizeopt


I think that already is pretty clear.

A day later, in the message to James Lowe, I published statistics about
the "one page with 4 small snippets" TeX document I attached to that
message:

   Then translate test.tex to pdf with

       lualatex --shell-escape test
       gs -sDEVICE=pdfwrite -o testtmp.pdf test.pdf
       pdfsizeopt.py --use-multivalent=no testtmp.pdf testfinal.pdf
       dir test*pdf --sort=time | tac

   With  line 23 "\def\lilyparms{  }" I get

   -rw-r--r-- 1 knut users   173538  9. Jan 11:53 test.pdf
   -rw-r--r-- 1 knut users   157303  9. Jan 11:53 testtmp.pdf
   -rw-r--r-- 1 knut users   149945  9. Jan 11:53 testfinal.pdf

   With line 23 "\def\lilyparms{ --bigpdf }" I get

   -rw-r--r-- 1 knut users   879441  9. Jan 11:55 test.pdf
   -rw-r--r-- 1 knut users    63359  9. Jan 11:55 testtmp.pdf
   -rw-r--r-- 1 knut users    59437  9. Jan 11:55 testfinal.pdf

The original patch to running.itely included:

   address@hidden -b, --bigpdfs
   +Generate really big pdf files with as less as possible
   +optimization of font data.

cu,
 Knut