
Protect IPR
See why thousands of companies use Locklizard to safeguard their documents and increase revenue streams.
Latest Posts
Public Key vs Private Key Encryption vs Passwords for Document ProtectionAugust 10, 2026 - 2:49 pm
Can PDF Files Have Viruses? What Your Organization Needs to KnowJuly 21, 2026 - 2:32 pm
What Is End-to-End Encryption, and Is It Enough for Documents?July 9, 2026 - 2:23 pm
Shadow AI: How Safe is ChatGPT for Confidential Information?July 1, 2026 - 2:58 pm
256-bit Encryption Explained: What It Means for Your DocumentsJune 26, 2026 - 12:03 pm
How To Guides
How to stop sharing screen
How to expire download links
How to sell study notes
How to print to PDF
How to protect Autocad files
How to protect a document
How to unlock a protected PDF
How to expire Excel files
How to watermark in Excel
How to protect Excel files
Save a Google Doc as PDF
How to share a PDF online
How to insert PDF into Word
How to edit a protected PDF
How to convert ePub to PDF
How to prevent PDF download
How to share Google Docs
How to prevent PDF download
Enforce do not copy distribute
Share sell PDF in WordPress
How to remove a watermark
How to add security to PDF
Publish digital publications
How to share a PDF as a link
How to timestamp a PDF
Insert PDF into Google Doc
How to convert Word to PDF
How to convert PDF to Word
Share securely in SharePoint
How to encrypt email in Gmail
How to encrypt PDF files
How to recall unsend an email
How to watermark PowerPoint
How to lock a Word document
How to santize PDF files
How to lock a Google doc
Prevent PDF security removal
Protect Word without password
Add a dynamic watermark
Password protect Google Doc
Add a watermark in Word
Make a PDF non editable
How to create a stamped PDF
How to prevent ebook piracy
Password protect a Word doc
How to protect a PDF securely
How to revoke document access
Change PDF security settings
How to disable printing of PDFs
Sell online courses securely
How to add security to a PDF
Encrypt a PDF without Acrobat
Share documents securely
How to prevent PDF sharing
Protect confidential documents
How to publish ebooks securely
How to restrict PDF editing
How to password protect a PDF
How to protect ebooks
How to sell Reports securely
How to make a PDF read only
How to send a PDF securely
How to watermark a PDF
How to lock a PDF from editing
How to encrypt a PDF
How to make a PDF expire
How to password protect a PDF
How to protect online courses
How to email a PDF securely

Document security watermarks to prevent digital piracy
in Blog, Document Security, DRM, PDF SecurityCan document watermarks replace DRM? The humble document watermark is proving highly popular as an addition to or replacement of Digital Rights Management (DRM) control methods, although its use and effectivity are not as well understood as you might think. We look at what you can achieve with document watermarks, and if they go far […]
Training course copy protection
in Blog, Document Security, DRM, PDF SecurityProtecting digital Training courses against piracy The pressure is on for training course providers to maximize revenues from and minimize costs of delivery. That means training goes digital. But going digital is often associated with loss of revenue since whole courses can be easily copied and made freely available on the Internet.
DRM is dead – long live DRM
in Blog, Document Security, DRM, PDF SecurityDRM for copyright protection Some people say DRM is dead and that people should be free to copy and reproduce works published on the Internet. Authors however want to get paid for their work (assuming they are not giving it away for free) yet the only way to ensure copyright protection is by using DRM […]
Controlling membership access with Document DRM
in Blog, Document Security, DRM, PDF SecurityProtecting members only information Ensuring only members can access your documents is no more important than controlling how they are used, where they are used, and for how long they can be used. Document DRM protects your documents against unauthorized use, misuse, and piracy.
Access controls, encryption or DRM for Document Security?
in Blog, Document Security, DRM, PDF SecurityWhat Document security method is best? There are three major classes of controls used by computer systems to protect access to information – Access controls, Encryption, and Digital Rights Management (DRM). But which one is the right one for your requirements and why?
Securing documents in the cloud
in Blog, Document Security, DRM, PDF SecurityDocument security in the cloud. Everyone knows the ubiquity of the cloud – a big empty space just waiting for you to fill it up with all sorts of goodies that you want to be able to share with the right friends or business partners, or customers, and who may well equally want to share […]
Which documents should be protected?
in Blog, Document Security, DRM, Ebook DRM, PDF SecurityDefining sensitive documents to protect. Surprisingly few organizations classify their information in order to help them protect it from unauthorized disclosure. Usually improper disclosures get noticed when personal data are disclosed, and that can mean litigation involving a corporate authority and the public, and bags of adverse publicity.
Revoke document access with DRM security
in Blog, Document Security, DRM, Ebook DRM, PDF SecurityDocument Revocation & Expiry. Document revocation is an important step in the information architecture coming somewhere between security and disposal. You can either revoke documents automatically using document expiry controls, or manually by suspending users, documents, or individual user access to specific document(s).
Why lock documents to specific devices, countries, IPs?
in Blog, Document Security, DRM, PDF SecurityLocking Documents for IPR control Although one of the primary requirements in PDF DRM (Digital Rights Management) is to identify the authorized user of a document, and make sure that only that person can use protected documents, it is relatively difficult to identify people, and although the IT industry has been working on improving the […]
Document Security Solutions – Encryption, DLP, ERM, IRM, DRM
in Blog, Document Security, DRM, PDF SecurityChoosing the right Document Security. Abraham Maslow said in 1966, “I suppose it is tempting, if the only tool you have is a hammer, to treat everything as if it were a nail.” And that is disturbingly true for most of us – especially product manufacturers who want to sell the security silver bullet (aka […]
DRM, Copyright Protection and the DMCA
in Blog, Document Security, DRM, Ebook DRM, PDF SecurityDRM & the Protection of digital information. Who says lightning never strikes twice in the same place? They are wrong. On the same day it is reported that HP have included new Digital Rights Management (DRM) in their printers to make them refuse to work with ‘foreign’ cartridges, and Claims are made that DRM restrictions […]
Offline Use of Documents with Locklizard PDF DRM
in Blog, Document Security, DRM, PDF SecurityDRM Offline Protection: the importance of offline access for document DRM. Whenever something on the computer stops working it’s always the fault of the provider of the end user application. And if DRM controls are present any failure is bound to be the fault of the evil DRM provider regardless of the facts.
Document Watermarking
in Blog, Document Security, DRM, PDF SecurityWatermarks for document security. Watermarking is quite an old technique, appearing to start in the 13th century when it identified the papermaker or the trade guild manufacturing the paper. So right from the beginning it was about preventing forgery and identifying the source of the paper. The Gutenberg Bible was watermarked.
Document Expiry using DRM controls
in Blog, Document Security, DRM, PDF SecurityUsing DRM to expire documents At the risk of stating the obvious, not all PDF documents are supposed to last forever. It would be nice if books, fiction or non-fiction, had that ability. But many historic works have been lost for all time because the library they were in was burned down (this problem still […]
Selling PDF books, files, documents online with DRM copy protection
in Blog, Document Security, DRMUsing DRM to protect PDFs sold online. Selling PDF books, files and documents online has obvious advantages. You can cut costs (no more printed copies to produce and distribute), help save the environment (no more paper), save time (distribution handled automatically by an ecommerce system), and reach new markets. The downside however is how do […]