Do you want to know how many people actually opened your PDF? Do you want to see which books a user has read? Many publishers, training companies, and document owners ask these questions every day. They send protected PDF files
How to See API Users and Download Activity for .vPDF Files in VeryPDF DRM Protector
Many website owners sell protected PDF files online. A common setup is simple: A customer pays on your website. Your website calls the VeryPDF DRM API. The customer automatically receives access to a .vpdf file. The customer can read the
Maximum Named Users vs Maximum Anonymous Viewers: Which DRM License Do You Need to Sell PDF User Manuals?
If you sell PDF user manuals online, one of the first questions you will have is this: Do I need to create one account for every customer, or can I let everyone use the same login? The answer depends on
Gmail encryption: how to encrypt & send secure email
How to encrypt & securely send Gmail email messages & attachments. Email is still one of the most common ways to share documents with customers, employees, partners, and clients. Gmail is widely used, but many people assume that Gmail encryption
How to Lock a Word Document from Editing, Copying, and Printing
If you need to lock a Word document from editing, copying, and printing, simply adding a password is rarely enough. Once a Microsoft Word document leaves your computer, it can easily be forwarded, copied, modified, or printed unless proper protection
How to Gift an eBook Without Letting People Share, Copy, or Print It
Many authors want to give away a free eBook to friends, reviewers, customers, or business partners. The problem is simple: Once you send a PDF by email, you lose control. The person who receives it can often: Forward it to
How to Secure a PDF for a Limited Time and Stop Downloading, Printing, Copying, and Screenshots
Many people need to share PDF files but do not want others to download, print, copy, share, or keep them forever. A common example is a training manual, exam paper, business proposal, research report, legal document, or paid ebook. You
How to Stop Annoying Security Alerts in Protected eBooks While Keeping DRM Protection
Many eBook sellers want strong protection against copying, screenshots, printing, and sharing. At the same time, they don’t want readers to see constant warnings or interruptions while reading. This is a common problem for authors, coaches, trainers, course creators, and
How to Let Only Authorized Users Open a Protected PDF with VeryPDF DRM Protector
If you want to share a protected PDF that only registered users can open, you need more than a watermark. You also need to make sure the PDF checks the user’s login before it opens. This article shows a simple
How .vpdf Document Protection Works, 256-bit AES Encryption Security, and Why It Cannot Be Cracked or Opened After Download
Many people worry about what happens if a protected PDF file is stolen or copied. With normal PDFs, once someone downloads the file, they can try to open it, share it, or attack it offline. .vpdf files work differently. The