![]() There are no passwords for users to enter (so no entry of attack, or method of sharing) and no insecure JavaScript running that could be manipulated to remove print protection. We don’t use passwords or JavaScript but instead employ public key technology and US Government strength encryption to protect your PDF files. Locklizard uses dedicated secure Viewer software so that PDF documents locked from being printed cannot be circumvented by plugins. The same is true of systems that rely on JavaScript which can be easily manipulated in the browser. For example, if you rely on PDF security software that uses plug-ins to Acrobat Reader, you may find that installing another plug-in that provides print manipulation capabilities circumvents the PDF security plugin and enables users to print a supposedly locked document. If you really want to lock a PDF document from being printed you need to use PDF security software that does not use passwords or cannot be easily compromised. Any file permissions you apply can be removed so you might wonder why you bothered to apply any security to begin with? If you think your documents can be locked against printing using a password protection system then you are just fooling yourself. A simple search on Google for the term ‘remove pdf password’ produces loads of applications that will remove printing restrictions for a small sum or for free. ![]() Whilst Adobe Acrobat and similar PDF creation/manipulation programs let you set file permissions to lock a PDF document from being printed, these permissions can be easily removed. ![]() Lock filed documents print how to#How to lock a PDF document from being printed ![]()
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