Compress PDF offline#

I found this great tool to compress pdf (python script) from the command line.

Requirements#

Python#

Check your python version

➜  ~ python --version
Python 3.8.9

Ghoscript#

Check your ghoscript version

➜  ~ gs
GPL Ghostscript 10.0.0 (2022-09-21)

Setup#

Add this command in your .bash_profile or .zshrc file

# Usage: spdf [input file] [output file] [screen*|ebook|printer|prepress]
spdf() {
    gs -sDEVICE=pdfwrite -dNOPAUSE -dQUIET -dBATCH -dPDFSETTINGS=/${3:-"screen"} -dCompatibilityLevel=1.4 -sOutputFile="$2" "$1"
}

Usage#

spdf BigFile.pdf SmallFile.pdf ebook

Image command lines#

Batch resize image#

Usage#

 ~ sips -Z 720 *.jpg

Adjsut max image ratio examples: 640,720,1024,1280 etc.

Combine two images into one#

Prerequisites#

 ~ brew install imagemagick

Usage#

 ~ convert +append image1.png image2.png combined_image.png

Result#

Image 1:#

Image 2:#

Combined image:#

Compress Video with ffmpeg#

Requirements#

ffmpeg

Compress#

ffmpeg -i input.mp4 -r 15 output.mp4

Reduce half original size#

ffmpeg -i input.mp4  -vf "scale=iw/2:ih/2" half-size.mp4

Video to gif#

ffmpeg -i input.mp4 -r 15 output.gif

Gmail clean#

larger_than:5m smaller_than:8M
size:5mb has:attachment
before: 2011 after:2005/04/17