PDF Enhancer uses a unique license key mated to a unique host id for validation. You will need to provide the unique host id to email@example.com to get a matching license key. If you are trying the software, you will receive a 30-day key. If you have purchased the software, you will receive a non-expiring permanent key.
To display the unique host id, just run pdfe –l. It will display a usage message similar to this with the host id at the end:
pdfenhancer version 3.8.XXXXX
UNREGISTERED: Apago host id 78:d1:fa:ed:6c:23
Please send your host-id to firstname.lastname@example.org and we will generate either a demo license or a permanent license if you purchased the product. When you send the host id, please include the product name, PDF Enhancer, and the last 4 digits of your order number if you purchased the software.
Once you receive the license key, you will need to put it somewhere that the program can access. There are three options.
1) You can pass the license key on the command-line.
"pdfe -license REPLACE_WITH_YOUR_LICENSE -o (output_pathname.pdf) (input_pathname.pdf)"
2) You can have PDF Enhancer store the license key in a file.
"pdfe -r REPLACE_WITH_YOUR_LICENSE"
Enhancer will write the license key to the registry on Windows and to your home directory on OS X. You can then run the program with the command:
"pdfe -o (output_pathname.pdf) (input_pathname.pdf)"
3) You can create a preferences file in a different location containing the line "key =
REPLACE_WITH_YOUR_LICENSE" and point to the preferences file location on the
command-line at runtime.
"pdfe -setup (pathname_to_preferences_file) -o (output_pathname.pdf) (input_pathname.pdf)"