PDF Link is a commercial command-line software that enables users to add text with external web links to multiple PDF files, in batch mode. It supports the following protocols: HTTP, HTTPS, FTP and mailto.
PDF Link is a cross-platform application that supports Linux, Unix AIX, Sun Sparc Solaris, Windows, HP-UX, and Mac OS X, in both 32-bit and 64-bit architectures. It does not require Acrobat to run.
Product's homepage
Limitations:
· The *TRIAL* text is added to existing and new links.
· The -remove, -create and -report options are limited to first 10 pages only.