Make copying your document deliberate, not casual
Screen protection raises the effort required to capture a document, and pairs with a watermark that names whoever captured it.

Stamps the recipient's identity on every page so screenshots name their source.
An honest word on what this can and cannot do
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.
What's actually enforced
Right-click disabled
No context menu, so no "Save image as" and no "Print".
Text selection off
The document can't be highlighted and copied out as text.
Drag-and-drop blocked
Images can't be dragged out of the viewer into a folder or a chat window.
Downloads off by default
Every link starts with downloads disabled. You enable them per recipient when you mean to.
Visible notice
Viewers are told the document is protected. Knowing you're being watched is a stronger deterrent than any technical control.
The part that actually works: identify the viewer
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.
Layer it properly
For genuinely sensitive material, protection is a stack rather than a switch:
Frequently asked questions
Raise the effort. Name the source.
Protection plus attribution, on every document you send.