PDF files can have restrictions that prevent you from for example copying text from them or editing, printing or merging them. PDFUnlock! can remove these restrictions (a.k.a "owner password").

If a password is required to open the uploaded file, you will be asked to enter it (a.k.a "user password"). PDFUnlock! cannot, however, recover lost or unknown user passwords.

A PDF file can also be subject to non-standard encryption, such as DRM. PDFUnlock! does not remove such.

Questions or feedback? Leave a comment on our blog, send an e-mail to pdfunlock@gmail.com, or get in touch via Twitter.