How are the images produced in your Scribble program/document? If you're referencing ".png" files via `image`, then if you could just reference ".pdf" files instead. In particular, you could write `image*` that converts a ".png" to ".pdf" and calls `image`.
If you're generating bitmaps some other way, the right change may be to generate a value that is convertable to 'pdf-bytres instead of just 'png-bytes, since the Latex/PDF renderer tries 'pdf-bytes before 'png-bytes. If you'd like to experiment with changing Scribble, see scribble-pkgs/scribble-lib/scribble/latex-render.rkt in the Racket repository, around line 342. You could add a convert of PNG to PDF via using `pdf-dc%`. At Mon, 6 Jan 2014 16:09:57 +1100, Daniel Prager wrote: > As I've added more and more images to my Scribble output I've noticed > empirically a considerable slowdown. > > Currently it takes around 56 seconds to process my main file (which > includes around 36 figures); 8 seconds when I commented out all the images. > > In hunting for the main bottleneck I came across this post -- > http://tex.stackexchange.com/questions/39929/fast-png-embedding-using-pdflatex-- > which says "PNG are recompressed during the pdfTeX run in general, but > in some cases, a direct copy is possible, which is much faster". > > Conditions are given under which pngs recompression should not be induced, > but a straightforward albeit indirect alternative method is also suggested > -- use "convert" (part of ImgeMagick) to pre-process the pngs into pdfs. A > quick test of the latter with a single image gave me a speedup using > Scribble from around 3.2s with straight inclusion of a png to 2.8s > including a pre-processed pdf of the same image (pre-processing with > convert is very fast, btw), suggesting that this may well be a significant > source of slow-down. > > Now, based on this I expect that I'll be able to get a reasonable speed-up > by saving out pngs, convert-ing them, and @image{}-ing the files back into > my Scribble, but I was wondering whether someone might have other tips > and/or whether there's any prospect of snappier image inclusion in the > standard pipeline: e.g. by ensuring that pngs are output in a format that > isn't recompressed or incorporating the convert trick into the conventional > Scribble to pdf pipeline. > > > Thanks > > Dan > ____________________ > Racket Users list: > http://lists.racket-lang.org/users ____________________ Racket Users list: http://lists.racket-lang.org/users
