Original link: https://blog.kelu.org/tech/2022/07/25/linux-command-for-pdf-compress.html
Install
Most Linux distributions already include an open source version of Ghostscript. If not, install it as follows:
apt install ghostscript
use
Suppose I want to compress the file编程珠玑.pdf :
/usr/bin/gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/ebook -dNOPAUSE -dQUIET -dBATCH -dColorImageResolution=150 -sOutputFile=编程珠玑_compressed.pdf 编程珠玑.pdf
Regarding the compression quality, we only need to modify the dPDFSETTINGS parameter:
| dPDFSETTINGS | describe |
|---|---|
| /prepress (default) | High quality (300 dpi) but larger files |
| /ebook | Medium quality (150 dpi) moderate file size |
| /screen | Low quality (72 dpi) but smaller output file |
The ebook is more suitable in terms of file size and clarity, so I use it. Compressed by about 40%.
Refer to the Ghostscript online documentation for more parameters.
This article is reprinted from: https://blog.kelu.org/tech/2022/07/25/linux-command-for-pdf-compress.html
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