![]() Probably, there is a way to tell ImageMagick to switch on compression without having to go through the intermediate PNG step, but I’m fine with that and haven’t looked for a way around it.Almost all Linux distributions come with a PDF viewer but not necessarily a PDF editor. This is going to help reduce file size dramatically. ![]() This gives the same quality as going directly to PDF, but with the benefit of PNG compression. You see that I convert first to PNG and then back to PDF. Also note that resolutions other than 150dpi, 300dpi, 600dpi and 1200dpi (and sometimes 2400dpi in high end) are unusual for printers and therefore font rasterized at 400dpi might look worse than font rasterized at 300dpi when printed. a Full HD 15″ is around 150dpi resolution), let alone printers. The default value is 72dpi and low enough to even look crappy on nowadays’ computer screens (e.g. You may want to pick something lower (though, 150dpi is the bare minimum if you consider ever printing the file) if file size is the main concern or a higher value (600dpi is considered good print quality). units PixelsPerInch -density 300 (which must be specified BEFORE the file name, because as soon as the file name appears, ImageMagick imports the PDF with the resolution specified AT THAT TIME – the default is 72dpi) specifies a resolution of 300dpi. Pdfunite file1.pdf file2.pdf readonly-rasterized.pdf merged.pdf This is for example the case for read-only-encrypted PDFs, which cannot be simply merged, In these cases I work around this using ImageMagick in this way:Ĭonvert -units PixelsPerInch -density 300 readonly.pdf readonly.pngĬonvert readonly.png readonly-rasterized.pdf However, there are cases when ImageMagick is one of the few solutions that work. Personally, I prefer pdfunite (comes with pdftk, I think). As pointed out by Sadeq, this results in poor quality and/or huge file size. Therefore, the first step is that it forces rasterization, then it joins the pictures and finally outputs them as a PDF. Well, you can kind of use ImageMagick, but remember that ImageMagick a pixel graphic manipulator and cannot deal with vector graphics. Or join our low-volume mailing list so we can keep in touch! Like us on Facebook for more useful information from the web design world. ![]() Say thanks?įound this article useful? Why not like Squelch Design on Facebook or join our mailing list to say thanks? This doesn’t work with ImageMagick on my Mac, but I expect it would work fine on a Linux system with GhostScript installed. Using ImageMagickĪs suggested by kosmo in the comments, another great method is to use ImageMagick: In this example it would create a file named logo-concepts-3-joined.pdf. Pdfjoin will choose a filename for the joined file for you. Pdfjoin logo-concepts-1.pdf logo-concepts-2.pdf logo-concepts-3.pdf Installing the package is easy though:Īfter the package and its dependencies have been installed you can simply use The program is part of the “pdfjam” package which, at a hefty 389mb of dependencies, may not be ideal for you. Another MethodĪs “anon” points out in the comments it is also possible to use the command “pdfjoin”, if you have it installed. You can tweak “ -sPAPERSIZE=” to suit your needs. ![]() In this example logo-concepts.pdf is the finished PDF with all pages appended, and logo-concepts-1.pdf, logo-concepts-2.pdf and logo-concepts-3.pdf are the individual pages. Gs -q -sPAPERSIZE=a4 -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=logo-concepts.pdf logo-concepts-1.pdf logo-concepts-2.pdf logo-concepts-3.pdf Here’s one way to do it using GhostScript from the command line: All I need do now is concatenate them to create one single PDF that I can send to the customer. So the way I work around this is to create multiple documents, one for each page, then use “Print to file” to save each one as a PDF. Sadly Inkscape doesn’t yet support multiple page documents, although they are planning this feature and so it shouldn’t be too long before it does. When I am working in Inkscape I often want to put together multiple-page graphics.
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