A registration key, also known as a product key or activation key, is a unique code that is used to activate and validate a software application. It serves as a proof of purchase and ensures that the user has obtained the software legally. Registration keys are typically generated by the software developer and are specific to a particular product, version, and platform.

: If you previously purchased the software, you can find your key in:

, you must obtain a unique registration key through the official developer's website. As shareware, the trial version is limited to converting only the first five pages

Includes options to convert specific page ranges or remove all graphics and images for a text-only output.

If you had the owner password for a secure PDF, this tool could strip the security during conversion to allow editing.