Apache - Force a PDF to download

The following solution will work with upper and lower case extensions- or both:
To make it work, just add it to the .htaccess file.

<FilesMatch "\.(?i:pdf)$">
  ForceType application/octet-stream
  Header set Content-Disposition attachment

    Last Changes

    1. More changes, added a lot of new Terraristic photos, drastically improved contact form [22.05.2017]
    2. Overall adjustments: Archive added for "Terraristic", removed "Blog" and "Programs" (since outdated) [14.05.2017]
    3. Added "Watercreature Details" to Creatures: Creatures [01.03.2017]
    4. Added "Thunder Bug Life Cycle" to Creatures: Creatures [23.02.2017]
    5. Added "Xanothl " to Creatures: Creatures [12.02.2017]

     For older changes, have a look at the website's history