在 Linux 中减小 PDF 文件大小

sudo apt install ghostscript

gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/screen -dNOPAUSE -dQUIET -dBATCH -sOutputFile=output.pdf input.pdf

ps2pdf input.pdf output.pdf

ps2pdf -dPDFSETTINGS=/ebook input.pdf output.pdf

#!/bin/bash
#- HELPER SCRIPT FOR DENSIFY
#-    original package         https://github.com/hkdb/Densify
#-    script author            Vijay Ramachandran
#-    site                     https://journaldev.com
#- 

# Go to your home directory (preferred)
cd $HOME

# Download the package
git clone https://github.com/hkdb/Densify
cd Densify

# Queue must be changed to queue in the file.
# Will not work otherwise
sed -i 's/Queue/queue/g' $PWD/densify

# Create the symlink to /opt
sudo ln -s $PWD /opt/Densify

# Perform the install
cd /opt/Densify
sudo chmod 755 install.sh
sudo ./install.sh

# Export to PATH
if [ $SHELL == "/bin/zsh" ]; then
    if test -f $HOME/.zshrc; then
        echo 'export PATH=/opt/Densify:$PATH' >> $HOME/.zshrc
        source $HOME/.zshrc
    else
        echo "No zshrc Found! Please create a zsh config file and try again"
    fi
else
    if [ $SHELL == "/bin/bash" ]; then
        if test -f $HOME/.bashrc; then
            echo 'export PATH=/opt/Densify:$PATH' >> $HOME/.bashrc
            source $HOME/.bashrc
        else
            if test -f $HOME/.bash_profile; then
                echo 'export PATH=/opt/Densify:$PATH' >> $HOME/.bash_profile
                source $HOME/.bash_profile
            else
                echo "No bashrc Found! Please create a bash config file and try again"
            fi
        fi
    else
        echo "Default Shell is not zsh or bash. Please add /opt/Densify to your PATH"
    fi
fi

densify