MaiPDF · Anti-copy basics

“Copying” is not only Ctrl+C

Select-copy is just one path. Screenshots, camera photos, and manual rewrite are also forms of copying. No tool can fully stop all forms, but you can block the easiest paths and raise misuse cost a lot.

No select-copy No direct download Watermark deterrence Clear limits
No print and no download protection icons

Four ways content gets copied

What controls block vs deter

Copy pathMain controlReality
Select-copy textViewer restrictions + render strategyMostly blocked for normal users in-browser.
Screenshot / cameraDynamic watermarkingNot blocked; deterrence and accountability increase.
Manual rewriteNoneCannot be prevented by technical controls.
Download then extractNo download + controlled accessRisk reduced, but no absolute guarantee against advanced methods.
PDF view with download disabled
Disable download to reduce direct file handoff.

Three high-risk document types

Pricing and quotes

High risk of quick text copy. Prioritize no-download, copy friction, and watermarking for leak deterrence.

Contracts and policy drafts

Set expiry windows so stale drafts do not stay open forever. Keep printing policy aligned with real signing needs.

Portfolio and design work

Screenshots are common; watermarking helps attribution. Use stricter modes only when sensitivity justifies UX cost.

Reference docs

If the goal is broad adoption, avoid over-restricting. Heavy friction can hurt reading more than it protects value.

Dynamic watermark on viewed content
Watermarking is a deterrence layer, not a screenshot blocker.

Honest boundary

What is realistic

Block easy copy paths, reduce file leakage probability, and add visible accountability.

What is not realistic

“Absolute anti-copy” does not exist for on-screen content. The goal is risk reduction, not magic.