Make copying your document deliberate, not casual

No web application can truly prevent a screenshot. Any browser-based tool claiming otherwise is overselling, and you should be suspicious of one that does. The operating system owns the screen, and a phone camera pointed at a monitor defeats every software control ever written. What screen protection actually does is remove the easy paths — right-click saving, drag-and-drop of images, text selection and copy, and the print shortcut — so casual copying takes deliberate effort rather than a reflex. The real deterrent is the second half: pairing it with a watermark that identifies the person viewing. We'd rather tell you that plainly than have you discover it after a leak.

Combine screen protection with a [dynamic watermark](/dynamic-watermark) and every page carries the reader's own email address. If a screenshot does get taken — by phone, by OS shortcut, by anything — the image identifies who took it. Deterrence through attribution is the only approach that survives contact with a determined viewer, and it's the one that changes behaviour.