This can also be useful for when printing if you want to "zoom in" on the content as the printer can scale to fit the width. If you have a PDF, and you find that the margins are too large, which is causing it to be hard to read easily on a tablet, you can crop the margins with pdfcrop as shown below: LEFT=-20 That will create a set of incremented filenames like so: Luckily this is really easy, and essentially the same as before in reverse (using ImageMagick). However, I need to convert that to just a set of PNG images. Tools like Figma make it really easy to export as a single PDF. If your PDF is in the reverse order of what it should be, you can rearrange the pages with the following command: $INPUT_FILENAME=input.pdf Pdftk can be installed by running sudo apt install pdftk-java. ![]() If you wish to split a PDF into a set of single-page PDFs, you can do so like this: pdftk myoldfile.pdf burst It should now work! Split PDF Into Set Of PDFs Edit your ImageMagick policy configuration: editor /etc/ImageMagick-6/policy.xmlĪdd the following just before the final tag: If you get the error message: convert-im6.q16: attempt to perform an operation not allowed by the security policy `PDF' error/constitute.c/IsCoderAuthorized/408. Also, all your images need to have the same DPI, otherwise it doesn't work. If you want the images to not all be the same width, then remove the -resize 629. The following command will create a PDF document where all the images are the same width. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn. ![]() That is not a mistake, one has to provide the password twice. Create Encrypted PDF PASSWORD="somePasswordHere" See this Stack Overflow thread for more on this fix, as well as what patch from Windows Update is to blame for it. This requires having installed qpdf with sudo apt-get install qpdf. If you get a PDF that requires a password to unlock, you can use this command to save a version that won't need unlocking in future. ![]() As with all of my cheatsheets, this is just a dumping ground for as things come up.
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