When someone sends a PDF that’s too huge, just navigate to the directory, and run this command:
gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/prepress -dNOPAUSE -dQUIET -dBATCH -sOutputFile=name_of_compressed_OUTPUT_file.pdf name_of_UNcompressed_INPUT_file.pdf
For even smaller files and lower resolution of 150dpi, just change the /prepress part to /ebook
SPEED TIP: to quickly get the path in your terminal so you can cd to it quickly, just touch an icon in the desired path destination folder, right click on it and copy/paste it into the terminal with control+shift+v. Then just remove the file name at the end before the final path slash and put a cd at beginning.
This runs software called ghost script (gs) I believe and gives amazing results.
Hope this helps!
