Easy-to-use security features enable you to protect sensitive information. Use PDF passwords, digital signatures, and redaction to build electronic processes you can trust. Digitally sign PDF documents, or add document timestamps. Add certified digital signatures to help recipients validate document authenticity and integrity. Enable Adobe Reader X or Reader 9 users to digitally sign PDF documents and forms or add document timestamps. Use passwords to help control access to your PDF documents. Apply permissions to restrict printing, copying, or altering. Save passwords and permissions as security policies that can be easily applied to new PDF files. However, when Mac users forget or don’t have password to open PDF files, how to read, edit or print PDF files on Mac as blow. Q1: My PDF view (preview on a mac) says i need a password to copy text from it? I need to copy a part of a document but it wont let me copy without giving it the “owner password” and it is not my admin password or any password that I put on it. Please help Q2: Password protected PDF files, where to enter password to copy and print? Hi, I just created a password protected PDF file(viewable, but can’t copy and print) from Pages on my Mac. Then, I opened that file on my PC (Adobe Reader 9.0), but I didn’t know where to enter the password to unlock the copy and print restriction. Could anyone tell me where to enter password? For resolving these problems, I search a tool— PDF Password Remover for Mac in the website. Mac PDF Password Remover can help you batch remove or decrypt “user password” and “owner password” from PDF documents on Mac. Then you can read, edit or print encrypted PDF files as you like. I hope it is helpful for us.