How can I separate the following high-resolution single-page PDF into multiple pages (page count is unimportant), so that each page is the size of standard printer paper (8.5"x11"). The map should be zoomed to 200% before it's separated, so that I can see the small details. At 100% resolution lots of details are missed.


I've tried some of the solutions here, even though that question doesn't pertain to this one, but had no success.


The requirement can be thought of as of tile cropping the original page. I think the following command does what you want:

convert -density 288 HarrimanTrailMap.pdf -crop 20% +repage HarrimanTrailMap-tiled.pdf

You'll need imagemagick and ghostscript installed. Also, you may encounter authorisation error when converting PDF files, have a look at https://stackoverflow.com/a/52863413/1921546 to resolve that.

If you feel that the resulting tiled PDF has less resolution, increase the -density value.

You can specify the -crop parameter by considering the number of tiles you want to split the original page into. Here, the original page is split into 5x5 tiles so it is cropped at 1/5=20% horizontally and vertically.

For more information about the command see the following link https://legacy.imagemagick.org/Usage/crop/#crop_tile

  • Tx! That worked nicely. I used the following Ghostscript script to reduce the file from 147mb to 15mb: wsl ghostscript -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/printer -dNOPAUSE -dQUIET -dBATCH -sOutputFile=output.pdf input.pdf
    – whitewings
    Jan 7 at 2:08

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