How to make a PDF file smaller or protect it with a password (for free)
- you can use the free software PDF24-Creator
Download: http://www.chip.de/downloads/PDF24-Creator_43805654.html
=> open existing PDF, dann select (on German version): Datei / Speichern unter / Auflösung and reduce DPI's from 600/300/300/600 to 300/150/150/300 (s. below).
