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Originally Posted by yokos
I have a lot of djvu files, I converted one by printing it to pdf. Viewing this file on iLiad it badly disappointed: ugly black horizontal lines are visible are all-over. Have a look at attached pdf-file; I will post a picture tomorrow.
I found out: the pages in pdf file are split in several horizontal image parts. The viewer of iLiad shows between a split a black line.
This is a great bug.
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The problem is that you have created a "version 1.6 pdf", and xpdf, that is the program the iliad uses for displaying pdfs, imlements only up to version 1.5. b_k uses evince that is based around poppler, and poppler is xpdf converted into a library, so it has the same limitations.
If you are able to get a bunch of image files (one per page), using ImageMagick convert utility you can get a nice pdf (perhaps with a little of fidling to get the right scale factor) from those files. It's as simple as in (tested on Linux):
prompt> convert '*.jpg' result.pdf
If you have to scale the images:
prompt> convert -geometry 200% '*.jpg' result.pdf
NOTE: In the tests i've done, it doesn't seems to compress much the images, so watch out the resulting file size.