Lock PDFs from editing, printing, copying. Stop sharing & control use.
How to lock a PDF file using Safeguard PDF Security
Locking PDFs with Safeguard is more secure than Adobe password protection and simple.
Right-click on your PDFs in Windows File Explorer and select the option ‘Make Secure PDF’.
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Lock PDF files – stop unauthorized use
Stop unauthorized access and sharing
Control use – stop copying, editing, printing, etc.
Lock PDFs to devices, countries, locations
User and PDF expiry, revoke files at any time
US Government grade PDF Protection to lock PDF files
Locking PDFs with Safeguard PDF Writer
Choose the DRM controls you want to use:
enable printing or limit the number of prints.
set PDF files to expire on a fixed date, after a number of days use, after a number of views or prints.
apply dynamic watermarks on printed and viewed documents.
log PDF views and prints.
Safeguard automatically protects PDFs from unauthorized sharing:
PDF files are always locked from being changed (read only).
Users cannot copy or save protected PDFs into unprotected files, edit or print them.
There are no passwords to enter or remove.
If a locked PDF is sent to a unauthorized user they will not be able to open it since they need a decryption key.
PDF documents are automatically locked to authorized devices.
You can lock users to country and IP locations.
Stops Windows print screen and common third party screen grabbers from grabbing screenshots.
Revoke locked PDF files at any time.
DID YOU KNOW?
Why you should NOT use passwords to lock PDFs
users can share passwords and thus ‘protected’ PDFs with others
passwords are easily removed with password recovery software
Adobe PDF permissions (stop copy, print etc.) can be removed without using any tools
once the user has the password they can unprotect the PDF and do what they like with it
“We have been looking for years to find a software company that would allow us to securely sell our eBooks. Locklizard offers so many options, we are able to fill the needs of all of our customers. We have used other software providers that had promised the security of our eBooks but they never lived up to that promise the way that Locklizard has.
The support we received has been outstanding. They are very responsive to our requests and go the extra mile.
I would recommend Locklizard if you are looking for secure PDFs.”
Why Safeguard PDF Security is more secure than Adobe Acrobat for Locking PDF documents
Dynamic watermarks (user’s name, email, company, date/time, etc.) can be displayed at view/print time.
You only have to protect the PDF once for all users and the correct information is inserted depending on the user who has opened the document.
PDFs are locked to devices and locations
PDFs can be locked to a country location, a domain, or a range of IP addresses on a user or global basis. For example, you might only want to allow users to use your protected PDF files from an office location.
PDF files are automatically locked to authorized devices so they cannot be shared.
PDF Expiry & Revocation
Set PDF files to expire on a fixed date, after a number of days, a number of views or prints.
Individual user access to the same PDF document can be set to expire at different times.
Revoke locked PDF files at any time no matter where they reside.
Track & Log PDF use
Track PDF usage to see when users viewed and printed your locked PDF files.
Safeguard uses US Government strength encryption and digital rights management (DRM) controls to lock PDF documents and control their use. Lock your PDF files from unauthorized sharing and misuse.
What is a PDF Lock?
A PDF lock is a method or technique for denying access to PDF encoded information. Although there are many ways of implementing access controls, such as passwords or registration codes, those are keys to open a PDF lock.
Some types of PDF lock are achieved with hardware – typically a ‘dongle’ which is a piece of hardware that must be present if the PDF lock is to be opened. Contrary to some recent ‘opinions’ the dongle is not obsolete and US law does not allow them to be removed UNTIL on an individual basis they are actually obsolete.
Other types of PDF lock are implemented in software, and these may require registration codes, user identification codes, as well as network or machine addresses to be present or provided. A PDF lock is a very important methodology supporting the application of DRM to PDF documents.
A PDF lock has to make use of encryption if it is going to prevent anyone from being able to process the PDF without a suitable key. And, of course, just like any other locks, there are different grades of PDF lock:
A simple PDF lock uses a password to allow access to the content it is protecting.
This is not a very effective because passwords can be easily given away, or cracked with password attack tools. Sometimes the password is also included with the document, which is not a very wise approach.
The more thorough PDF lock goes much further. It checks independently that the user/machine it is working on has been registered for the document in question, and that it can obtain secrets needed to form the key, and that the use of the key is valid.
This kind of PDF lock is therefore much more subtle, and breaking it much more complicated.
And whilst a PDF lock may show some of the characteristics of physical locks – only opening at certain times, not opening if the surroundings are wrong, and so on, it can extend the capability of the physical lock by addressing how the PDF is subsequently used. So a strong PDF lock should consist of a granular and layered architecture – decide what features are to be unlocked, and even for how long or under what circumstances – rather than a simple on/off mechanism.
Most importantly, a PDF lock must be able to prevent authorized users from passing on information after it has been unlocked.
Adobe Acrobat lets you lock PDF files with a password so that they are set to view or read only. You can lock PDFs so they cannot be copied, printed or edited.
However, the only protection available is the password which can be easily removed using freely available PDF password removal tools. Once the password is removed the recipient can do what they like with the file.
So the Adobe method of locking PDFs to prevent changes provides zero protection since it can be easily defeated.
Locking PDFs with Safeguard PDF Security
Safeguard PDF Security locks PDFs using public key technology. There are no passwords to enter or remove.
When you protect a PDF, a corresponding key for the document is relayed to a server and stored encrypted. This key is transferred in encrypted form to an authorized user’s computer when they open the PDF document. The key is held encrypted in a keystore and the keystore is locked to the authorized computer so it cannot be moved to another device.
Safeguard PDF Security locks PDF files so they cannot be be copied, printed, edited, saved as (saved in unprotected form), or screen grabbed, and enables you to apply dynamic watermarks on printed and viewed documents.
When you lock a PDF using Safeguard PDF Security it encrypts the document and applies DRM controls – document protection is enforced no matter where the PDF file is stored or who it is sent to. If a locked PDF is sent to a unauthorized user they will not be able to open it since they need a decryption key.
Download PDF locking software
Download PDF protection software that uses US Government strength encryption and digital rights management controls to lock PDF files without using insecure passwords.
Protect PDF files against copying, printing, editing, and unauthorized distribution. Lock PDF files to individual devices and locations so they cannot be shared.
Safeguard PDF Security and Enterprise PDF DRM are a secure alternative to Adobe Acrobat PDF password protection – lock PDFs to ensure they remain protected regardless of location.