Occasionally, pdftocairo creates an output pdf that is 5 to 10 times larger than the input pdf. That causes processing time and file transfer time issues for us when the pdf was already several megabytes in size. I’m a link to an example pdf that starts off as 2 MB but balloons out to 10 MB after running through pdftocairo. I've done some research on the cairo format and examined the output using the Acrobat 9 filesize audit tool, and I think a lot of the extra size is coming from the vectorized version of some very complex images. I am using poppler-utils version 0.18.4 on Ubuntu 12.04. Is there any workaround you can suggest that would decrease the filesize without visible drops in quality? It’s not a requirement that the output be in the cairo format, so a solution may involve somehow undoing the vectorization. I've gotten some success with running "pdftops" then "ps2pdf" on the document before running "pdftocairo", but I don't understand why the resulting document is smaller and if it is actually solving my problem.
Original 2MB pdf: https://dl.dropboxusercontent.com/u/11610849/Lenovo%20x220%20-%20datasheet.pdf The same PDF, after going through pdftocairo -pdf, not 10MB: https://dl.dropboxusercontent.com/u/11610849/AFTER_PDFTOCAIRO%20-%20Lenono%20x220%20-%20datasheet.pdf Any input would be helpful, thanks for your time. Matt Jones
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