PDFtk

PDFtk, which is short for PDF Tool Kit, is a handy software tool that allows you to work with PDF documents. You can use PDFtk to merge multiple documents together, to split a large PDF document, to watermark a PDF document, and more.

PDFtk works with any Windows edition from Windows XP onward. You can run one of three PDFtk editions on your Windows-powered PC: PDFtk Free, PDFtk Pro, or PDFtk Server.

With PDFtk Free you can perform two tasks: merge and split PDF documents. If you have two PDF documents for example, you can use PDFtk Free to merge them together. If you have a 9-page PDF document, you can use PDFtk Free to extract the first 3 pages.

With PDFtk Pro you can perform the aforementioned two tasks, merge and split PDF documents, and you can perform a few extra tasks: rotate pages, add stamp, add watermark, password-protect the PDF document. To access these extra tasks you must upgrade from PDFtk Free to PDFtk Pro. At the time of writing this, the upgrade is priced at $3.99.

Alongside PDFtk Free and PDFtk Pro there’s PDFtk Server, a command-line tool that comes bundled with PDFtk Free and PDFtk Pro. PDFtk Server can be used for server-side PDF documents processing and to give software products the ability to manipulate PDF documents.

Get PDFtk and you’ll be able to merge and split PDF documents.
Get PDFtk and you’ll be able to merge, split, rotate, stamp, watermark, and password-protect PDF documents.