#IMAGEMAGICK REPAGE PDF#

If you don’t want to OCR it later, you can use 300 or even lower, for OCR use at least 400 (if the orig. If you implementation by any chance overwrites the output, try pages-%02d.png. This will result in sequence of files like pages-0.png pages-1.png pages-2.png, because ImageMagick very smart. (And it actually works even for text documents, not only PDFs consisting of images.) convert -density 300 orig-scan.pdf pages.png

#IMAGEMAGICK REPAGE PDF#

This essentially takes every page from PDF and saves it as an bitmap image. (If you opted for image sequence output from your scanner rather than PDF then you can skip this part.) For large documents, try using -monitor option. One little warning - ImageMagic doesn’t support multithreading and it’s not exactly fast, so depending on the number of pages in your scan, the operations might take VERY long time.

Since we won’t use another tool here, there’s a good chance, that this tutorial applies not only to Linux and Mac, but roughly to Windows, too. You will need convert, which is on most Linux machines, I think.

I’ll show here what to use to achieve that (quality of the output and amount of adittional work depends on how carefully you scanned the book). Now, the result you want is a clean PDF with one page of the book per page in the PDF. Morever, there are ugly borthers you don’t want either. Imagine you have scanned part of a book or some other material consisting of multiple pages and the resulting document is PDF where every page contains two facing pages of the original book. TL DR: convert -density 300 orig-scan.pdf pages.pngĬonvert `ls pages-*.png` -crop 3704x1852+160+20 +repage -crop 50%x100% pages-split.pngĬonvert `ls pages-split*` -page 100%x100% result.pdf Command line processing of multipage book-type scanned documents with ImageMagick.

Imagemagick repage