Using ImageMagick to easily: Split, Merge, Remove a page from PDF.

pdf-conversion-fun.md

Install Required libraries:

sudo apt-get update && sudo apt-get install imagemagick gs

create directory to test commands

mkdir -p pdf_conversion/{merged,split}
cd pdf_conversion

download sample multi-page pdf to test with

curl -o LargeSample.pdf "http://cl.ly/0o1T453E153m/download/LargeSample.pdf"

Split a pdf into separate images

convert LargeSample.pdf split/page-%0d.jpg

Merge separate images into one full pdf.

convert split/*.jpg merged/full.pdf

Remove a page from a full pdf.

convert LargeSample.pdf split/page-%0d.jpg
rm split/page-2.jpg
convert split/*.jpg merged/full.pdf

With PHP: You can use PHP exec function to run these commands, ie:

<?php
exec('convert LargeSample.pdf split/page-%0d.jpg');

Links to read:

http://linuxcommando.blogspot.com/2015/03/how-to-merge-or-split-pdf-files-using.html http://linuxcommando.blogspot.com/2013/02/splitting-up-is-easy-for-pdf-file.html http://stackoverflow.com/questions/17025515/converting-a-multi-page-pdf-to-multiple-pages-using-a-single-command http://codetheory.in/convert-split-pdf-files-into-images-with-imagemagick-and-ghostscript/

bad quality! not lossless

better solutions: pdftk, pdfjam, qpdf, pdfjoin, pdfshuffler, ghostscript, pdfseparate, ...

• https://superuser.com/questions/1197872/split-pdf-separate-some-pages-without-losing-quality-in-linux-terminal
• https://superuser.com/questions/345086/split-pdf-document-from-command-line-in-linux
• https://askubuntu.com/questions/221962/how-can-i-extract-a-page-range-a-part-of-a-pdf
• https://stackoverflow.com/questions/2507766/merge-convert-multiple-pdf-files-into-one-pdf