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== pdftk is better than ghostscript ==

Use pdftk!

== Merge PDFs ==

Merge multiple PDFs with GhostScript: [http://superuser.com/questions/54041/how-to-merge-pdfs-using-imagemagick-resolution-problem] [https://nixtricks.wordpress.com/2009/09/01/cli-combine-or-remove-pages-from-a-pdf-document-using-ghostscript/]
gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile=temp.pdf pdf1.pdf pdf2.pdf

Merge multiple PDFs with pdftk: [http://superuser.com/questions/54041/how-to-merge-pdfs-using-imagemagick-resolution-problem]
# must install first
pdftk pdf1.pdf pdf2.pdf cat output temp.pdf

Merge multiple PDFs with ImageMagick: [http://superuser.com/questions/54041/how-to-merge-pdfs-using-imagemagick-resolution-problem]
convert -density 150 $(ls -rt *pdf) output.pdf
convert -density 150 *.pdf output.pdf
convert -density 600 file1.pdf file2.pdf -resize 50% new.pdf

== Remove Page ==

Remove a page with GhostScript:
# print pages from [START_PAGE] to [END_PAGE]
gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -dQUIET -dFirstPage=[START_PAGE] -dLastPage=[END_PAGE] -sOutputFile=output.pdf input.pdf

For reasons outlined by KenS, Ghostscript is not the best tool for what you want to achieve. A better tool for this task is pdftk [http://stackoverflow.com/questions/22871712/use-ghostscript-to-delete-a-page-not-extracting-a-range]
# print pages 1, and 3-end (3 to end)
pdftk input.pdf cat 1 3-end output output.pdf

== Remove Secure ==

If signed (secure), this can be removed with qpdf:

qpdf --decrypt in.pdf out.pdf

yum install qpdf

---

Assuming it's simply a 'rights' (owner) password that restricts things like editing, printing, and copying (i.e. the password does not need to be entered to open the file) the following will remove the restrictions:

# Grab http://qpdf.sourceforge.net/
# Unzip/Install and navigate to the bin folder that holds qpdf.exe (or similar for your platform)
# Place the PDF you wish to work on in the same folder
# Run: qpdf --decrypt InputFile.pdf OutputFile.pdf (use "s if the file name has spaces).
# Do what you like with the OutputFile.

If your PDF file is user password protected, change step 4 to qpdf --decrypt --password=yourpassword InputFile OutputFile

ref: https://superuser.com/questions/179064/how-to-remove-security-from-a-pdf-file

This won't work for Adobe Digital Editions and may have issues with digitally-signed files.

Some discussion on the background of these owner password restrictions at https://lwn.net/Articles/335415/

== Select Pages and Merge ==

# copy pages 55 60-end to new file
pdftk book1.pdf cat 55 60-end output book1_small.pdf

# copy last page to new file
pdftk book2.pdf cat end output book2_small.pdf

# merge files
pdftk book1_small.pdf book2_small.pdf cat output book_combined.pdf

== Linux PDF ==

Install:
yum install ghostscript poppler-utils pdftk ImageMagick

-

== Convert JPEG to PDF ==

Convert JPGs to PDF: (using ImageMagick) [http://askubuntu.com/questions/246647/jpeg-files-to-pdf] [http://unix.stackexchange.com/questions/20026/convert-images-to-pdf-how-to-make-pdf-pages-same-size]
convert *.jpg pictures.pdf
convert page1.jpg page2.jpg +compress file.pdf
convert `ls -1v` file.pdf
convert -page A4 -compress A4 *.png CH00.pdf
convert a.png b.png -compress jpeg -resize 1240x1753 -units PixelsPerInch -density 150x150 multipage.pdf

convert a.png b.png -compress jpeg -resize 1240x1753 \
-extent 1240x1753 -gravity center \
-units PixelsPerInch -density 150x150 multipage.pdf

convert in.jpg -resize 1240x1750 -background black -compose Copy\
-gravity center -extent 1240x1750\
-units PixelsPerInch -density 150 out.pdf

convert in.jpg -units PixelsPerInch -set density '%[fx:w/8.27]'\
-repage a4 out.pdf

Set density attributes (but does not reduce actual image sizes!)
convert -page 2400x2400 -density 300 *.jpg out.pdf # 8in x 8in @ 300dpi
convert -page 3375x2625 -density 300 *.jpg out.pdf # 11.25in x 8.75in @ 300dpi

Reduce image quality and set density attribute:
convert -resize 400x400 -page 400x400 -density 100 *.jpg out2.pdf # 4in x 4in @ 100dpi (low res 8x8)
convert -resize 675x525 -page 675x525 -density 100 *.jpg out2.pdf # 6.75in x 5.25in @ 100dpi (low res 11.25x8.75)

== Convert PostScript to PDF ==

#ps2pdf links to ps2pdf12
ps2pdf input.ps
ps2pdf input.ps output.ps
ps2pdf12 input.ps output.ps
ps2pdf13 input.ps output.ps
ps2pdf14 input.ps output.ps

== Optimize PDF ==

pdfopt input.pdf output.pdf

== Standard Thirteen PDF Fonts ==

Standard Thirteen PDF Fonts (generally don't embed) [http://www.linux-mag.com/id/1983]
*Symbol
*Times (plus four variants)
*Helvetica (plus four variants)
*Courier (plus four variants)

=== List Fonts in PDF ===
pdffonts input.pdf

References:
[http://www.linux-mag.com/id/1983 Creating PDFs]

== Merge multiple PDFs ==

yum install pdfmerge # rpmforge

Usage:
Syntax: pdfmerge file1.pdf file2.pdf... fileN.pdf outfile.pdf

Has some issues: [http://lists.centos.org/pipermail/centos/2012-February/123135.html]

== pdftk ==

BEST OPTION!

pdftk - PDF Tool Kit

Better Merge
pdftk in1.pdf in2.pdf cat output out1.pdf

pdftk description:
If PDF is electronic paper, then pdftk is an electronic
: staple-remover, hole-punch, binder, secret-decoder-ring, and
: X-Ray-glasses. Pdftk is a simple tool for doing everyday things
: with PDF documents. Keep one in the top drawer of your desktop and
: use it to:
:
: * Merge PDF Documents
: * Split PDF Pages into a New Document
: * Decrypt Input as Necessary (Password Required)
: * Encrypt Output as Desired
: * Burst a PDF Document into Single Pages
: * Report on PDF Metrics, including Metadata and Bookmarks
: * Uncompress and Re-Compress Page Streams
: * Repair Corrupted PDF (Where Possible)

== pdftk ==

See [[Linux/pdftk]]

== Crop Margins ==

PDFcrop

Install:
yum install texlive-utils
apt-get install texlive-extra-utils

If you wish to crop a pdf with left, top, right and bottom margins of 5, 10, 20, and 30 pt (points), then run: [http://askubuntu.com/questions/124692/command-line-tool-to-crop-pdf-files]
pdfcrop --margins '5 10 20 30' input.pdf output.pdf

Crop 5pts all margins:
pdfcrop --margins 5 input.pdf output.pdf

Rulebook example:
pdfcrop --margins "-50 -35 -50 -35" STF-Rulebook.pdf out.pdf

== keywords ==

[[Category:Linux]]

Linux/PDF - Revision history

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