Re: Huge PDFs

[luigi scarso <luigi.scarso@gmail.com>]

On Thu, Dec 29, 2011 at 2:19 PM, Hans Hagen <pragma@wxs.nl> wrote:
> On 29-12-2011 13:45, luigi scarso wrote:
>>
>> On Thu, Dec 29, 2011 at 12:16 PM, Jan Heinen<JaHeinen@gmx.de>  wrote:
>>>
>>> Hello,
>>>
>>> lots of my images are huge 200x250mm. I reduce their size with:
>>> \externalfigure[cow][width=20mm, heigth=25mm]
>>>
>>> After generating the PDF, the pdf is very huge.
>>>
>>> 1. Can't Context put the reduced image into the PDF?
>>> 2. How can I generate one PDF version for printing (300dpi) and one for
>>> the
>>> screen (72dpi)?
>>>
>>> I am using Context mk-IV.
>>
>> no, you need something like ghostscript.
>> In this case (if you have not problems of space and time) it's better
>> to transform the pdf in ps with
>>  pdftops yourfile.pdf
>> and then apply ghostscript to the final ps (see the documentation
>> about ghostscript)
>
>
> ghostscript can do that directly with the pdf (no need to go through ps)
>
> (also see:
> http://article.gmane.org/gmane.comp.tex.context/71919/match=lowres)
yes, but latest ghostscript (ver. 9)  sometimes fail when used
directly with pdf.
pdf -> pdftops ->ps ->ghostscript ->pdf seems to be more robust and
gives better results
(although space and time consuming).



-- 
luigi
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