John Pye wrote:
Helge Hafting wrote:
John Pye wrote:
Hi all
I would like to know if there's a way I can easily downsample (or
'degrade') images in my LyX document when creating output using
pdflatex. I have a mix of PNGs, PDFs, EPS and JPG in my document, but my
PDF file is starting to become large and I'm sure there must be some
too-high resolution images in there. I found the graphics/degrade
package on CTAN but that seems to require that I use ERT for all my
images, which I'd rather avoid.
If it's not possible from within LyX, perhaps there's a post-processing
tool that someone can recommend: one that does the downsampling of a PDF
file, without killing my hyperlinks and bookmarks, would be what I'd
want.
Any suggestions?
Just look at the size of your image files. Then, downsample
the biggest ones. If you want to keep the originals, make new
filenames for the downsampled files, and change the document
accordingly.
I was looking for an automated approach. For example on Windows, there
is 'PDF Factory' (although I haven't tried it with hyperlinks). So I was
hoping for something similar on Linux.
One reason why an automated approach is needed is that the file can be
big and appear big on the page: it /needs/ to be big. But if it's big
and appears /small/ on the page, then it needs to be downsampled.
Another reason: a LyX document can embed PDFs, SVGs, and I imagine other
'image' files, that can in turn embed bitmaps. One needs a tool that
examines the resulting PDF output, rather than the input files.
Cheers
JP
You have ImageMagick, right? What about preprocessing ala
convert -resample 150x150 old.png new.png
(setting the resolution to whatever works for you)? This could be scripted.
/Paul
