Compress PDF file
This is the only solution that works for me in reducing the pdf file size:
Usage:
1. In the command line:
$ ./compresspdf.sh mypdf.pdf
2. The command opens a GUI interface, select Screen-view only (72dpi) and click OK

3. Beautiful
Usage:
1. In the command line:
$ ./compresspdf.sh mypdf.pdf
2. The command opens a GUI interface, select Screen-view only (72dpi) and click OK
3. Beautiful