Unlock PDF password support several usual features like password protection, page restriction, encryption level, high and low resolution. Application allows locking and unlocking page permission as per your need. Tool permitted you to work with several page permissions such as document printing, content copying, content editing, form-filling, page extraction, annotation, commenting, accessibility and assembling. Program allows working with 128 and 40 bits encryption level protection. You can add sub-string at begin or end of file name for better file naming. Features: * You can lock and unlock password and page permission options as per your need. * You can work with several page permissions like content copying, document printing, form-filling, page extraction, annotation, accessibility and more. * You can protect PDF document for un-authorized user. * You can apply and release password protection option. * You can use encryption level like 128 bits and 40 bits. * You can use both 32 and 64 bit operating system. * You can work with all Window operating system like Vista, XP, NT, 2000, 7 etc.