You may use Master PDF Editor for free for reading, filling PDF forms, comment and printing documents.

In order to activate the application, you have to purchase a license. This will grant you a registration key for Master PD Editor activation.

One registration key can be used for Master PDF Editor activation on a workstation and a home PC or laptop within one local user account on any of the supported OSes (Windows, Linux, or Mac OS X).

Follow this link for purchase:

All licenses are valid for unlimited term for the software version they were purchased for. Besides, our clients are provided with technical support and free updates for a year after purchase date. After this term, registered users can renew the license by purchasing a new version for 50% of the actual price, which automatically gives another year of support and updates. Contact us with technical support, contact form on our Contact Us page, or by email address

Please, make sure to inform Order ID or email address you used when purchasing, if you contact us about license renewal!

On Line Activation

Off Line Activation

License Deactivation