[OS X TeX] PDF resolution redux

Simon Spiegel simon at simifilm.ch
Wed Aug 10 12:49:48 CEST 2005


On 10.08.2005, at 12:41, Ben Lings wrote:

> On 8/10/05, Simon Spiegel <simon at simifilm.ch> wrote:
>
>> Hi everybody,
>>
>> there has been some discussion on the subject of the resolution of
>> PDFs created by Pdftex before, but I still have a question. AFAIK
>> pdftex preserves the resolution of included bitmap graphics, while
>> fonts are resolution independendent. So far, so good. I'm currently
>> working on my thesis and have different kind of bitmap graphics, most
>> of them in quite high resolutions. My problem is that the final PDF
>> ends up quite big and many pictures actually have a far deeper
>> resolution than needed. My question: Can I somehow scale down all the
>> included images to the same dpi, let's say that all images don't go
>> over 1200dpi?
>>
>
> You can use the OS X ColorSync Utility. Open the PDF with this, then
> create a new filter. In the details tab, select Images from the pop-up
> list.  You can then choose to downsample images and to JPEG compress
> them, which will reduce their size by a large amount.
>
> Not quite what you asked for (can't specify DPI), but a step in the
> right direction!
>

Thanks. I just realized that my question wasn't put well. What I want  
is to tell Pdf(la)tex to scale down the document. Of course, I could  
downsample the individual images, but I'm looking for a solution  
which would allow to keep one version of the original images and have  
different pdfs created depending on the resolution I need on a  
specific occasion. Let's say a low resolution to put the document on  
the web and a high resolution for printing. So I don't want to  
manipulate the images but have pdftex downsample them.

simon
--
Simon Spiegel
Mutschellenstr. 97
8038 Zürich

Telephon: ++41 43 535 81 71
Mobophon: ++41 76 459 60 39

http://www.simifilm.ch

"I have never been certain that the moral of the Icarus myth is, as  
is generally accepted, 'don't fly too high', or whether it might also  
be thought of as: 'forget about the wax and feathers, and do a better  
job on the wings." Stanley Kubrick

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