If PDF is electronic paper, then pdftk is an electronic staple-remover, hole-punch, binder, secret-decoder-ring, and X-Ray-glasses. Pdftk is a useful tool for handling PDF documents. Every PDF user should have one in the top drawer of his/her desktop.

Use it to:

• Merge PDF Documents
• Split PDF Pages into a New Document
• Decrypt Input as Necessary (Password Required)
• Encrypt Output as Desired
• Burst a PDF Document into Single Pages
• Report on PDF Metrics, including Metadata and Bookmarks
• Uncompress and Re-Compress Page Streams
• Repair Corrupted PDF (Where Possible)

Pdftk is also an example of how to use a library of Java classes in a stand-alone C++ program. Specifically, it demonstrates how GCJ and CNI allows C++ code to use iText´s (itext-paulo) Java classes.