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import - Convert imported PDF to an image


I've looked through the forum and have not seen an answer for this. I would like to be able to import a pdf document in which each page contains an QR code. I want to then use the Barcode reader function to identify specific pages. Is there a way to convert the PDF pages into images within Mathematica. I have been able to use Acrobat to convert the PDF into images outside of Mathematica - but it would be nice not to have to pre-process each file.



Answer




Is there a way to convert the PDF pages into images within Mathematica



Yes, just do f = Import["my_file.pdf", "Pages"]; and now f is a list, each is one page. Then use Export["f.png",f[[1]]] to export the first page as png


Here is MWE



 SetDirectory[NotebookDirectory[]];
f = Import["my_file.pdf", "Pages"];
Export["page" <> ToString[#] <> ".png", f[[#]]] & /@ Range[Length[f]]

Mathematica graphics


reference http://reference.wolfram.com/language/ref/format/PDF.html


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