On Thursday, 10 December 2020 15:21:05 GMT Grant Edwards wrote: > On 2020-12-10, Michael <[email protected]> wrote: > > On Thursday, 10 December 2020 08:27:33 GMT Neil Bothwick wrote: > [...] > > >> I use gscan2pdf, although it sans to many more file formats. Scan to 2 > >> page PDF and your printer can print in duplex. > >> > >> Gscan2pdf has lots of nice features, I used to use it with an ADF and it > >> would scan all the sheets, then I'd turn the stack over and feed it back > >> in and it would scan the other sides and then put all the pages in the > >> correct order. > >> > >> I have a duplex scanner now, but that was a real time saver. > > > > Alternatively, on the CLI you could use imagemagick to convert your png, > > tiff, jpg, etc., to pdf: > > > > convert scan1.png scan1.pdf > > convert scan2.png scan2.pdf > > > > Then join the two pdf documents into one with two pages, using poppler's > > pdfunite: > > > > pdfunite scan1.pdf scan2.pdf scanned.pdf > > There's no need for the two-step process: > > $ convert scan1.png scan2.png scanned.pdf > > -- > Grant
There was some vulnerability in ghostscript[1] which disabled the above conversion - but I can't find the BGO number. I thought it had been patched since then, but my system appears to not have been fixed: $ convert scan1.jpg scan2.jpg scan.pdf convert: attempt to perform an operation not allowed by the security policy `PDF' @ error/constitute.c/IsCoderAuthorized/422. [1] https://www.kb.cert.org/vuls/id/332928/
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