Re: Size of PDF with lots of images
Oswaldo <[email protected]>
| Newsgroups | gmane.comp.lib.cairo |
|---|---|
| Message-ID | <[email protected]> |
El 16/01/2014 4:44, Behdad Esfahbod escribió: > Back in 2007 Carl and I developed Slippy a GUADEC to do our cairo slides. I > have used it since for many presentations. It's a pycairo-based tool where > you express slides as Python functions. It's very handy, specially if you > want to use cairo drawing in your slides. > > Back in the days, if I had a huge background image, it was replicated in each > slide, so I was getting, like, 240MB PDFs for a simple presentation. > Fortunately that has long been fixed. > > Now, for my GLyphy talk [2], the source images are 14MB [3], but the generated > PDF [4] is 18MB. Does anyone feel like taking a look? > > [1] http://github.com/behdad/slippy > [2] https://vimeo.com/83732058 > [3] https://github.com/behdad/slippy/tree/master/glyphy > [4] http://behdad.org/glyphy_slides.pdf > Hello, I do not know if your problem is this: I also use pyCairo to generate PDFs and when I used the same image on multiple pages (logos, backgrounds, etc) the pdf file was too large because if i use the same image ten times the image was embedded ten times in the pdf file. I solved it creating an image cache surface object, then, before create a new image surface I search the cache and, if exists on it, I reuse the previous created surface. In this way image was embedded only once. Regards. -- Oswaldo -- cairo mailing list [email protected] http://lists.cairographics.org/mailman/listinfo/cairo