PDFtk - The PDF Toolkit
PDFtk is a simple tool for doing everyday things with PDF documents. It comes in three flavors: PDFtk Free, PDFtk Pro, and our original command-line tool PDFtk Server.
PDFtk 
PDFtk Free is our friendly graphical tool for quickly merging and splitting PDF documents and pages. It is free to use for as long as you like.
Power Users: PDFtk Free comes with our command-line tool, PDFtk Server. So you get both the GUI and the command-line interface to PDFtk!
Available for Windows 10 and 11. Download the installer now:
PDFtk 
Use PDFtk Pro to quickly split, merge, rotate, watermark, stamp and secure PDF pages and documents. PDFtk Pro is a graphical application that makes working with PDFs as easy as possible.
To see PDFtk Pro in Action, visit our Guide to PDFtk Pro.
Power Users: PDFtk Pro comes with our command-line tool, PDFtk Server. So you get both the GUI and the command-line interface to PDFtk!
Only $3.99!
Available for Windows 10 and 11. Your purchase will include a Windows installer download link and a license key. Thank you for your purchase!
End-User License Agreement
Conditions for using PDFtk Pro are detailed in its End-User License Agreement here. PDFtk Pro uses third-party libraries that have their own licenses which are described here under Third-Party Materials. This license information is also included with the downloaded software.
PDFtk 
PDFtk Server is our original command-line tool. It is commonly used for server-side processing of PDFs. It is also used by many PC software publishers to give their products the ability to manipulate PDFs.