Linux - Compressing PDF Documents In Linux
Table of Contents
Using ghostscript
$ gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/screen -dNOPAUSE -dQUIET -dBATCH -sOutputFile=out.pdf in.pdf
Note the term `-dPDFSETTINGS=/screen` in the command. You can actually tweak this option to fiddle with the output PDF’s size. Below is a table of the different -dPDFSETTINGS options and what they do:
| -dPDFSETTINGS options | What does it do? |
|---|---|
| ——————————————- | —————————————————————- |
| -dPDFSETTINGS=/screen | Output files will have up to 72 DPI. |
| -dPDFSETTINGS=/ebook | Output files will have up to 150 DPI. |
| -dPDFSETTINGS=/prepress | Output files will have up to 300 DPI. |
| -dPDFSETTINGS=/printer | Output files will have up to 300 DPI, and ready for printing. |
| -dPDFSETTINGS=/default (Usually prepress) | Depends on which of the above options is assigned as “default.” |
Out of the box, `/prepress` is the default.
Using shrinkpdf
$ shrinkpdf in.pdf > out.pdf