Presentations,
Protected.

Distribute high-value course documents without losing control. Secure Reader combines dynamic watermarking with a view-only delivery layer.

Upload First Document View Platform Map
The Ecosystem
THATISNOT. — Watermark

Thatisnot applies server-side, dynamic watermarks with stroke effects to every page of every document you share. Each viewer sees a unique watermark tied to their account — making leaks instantly traceable.

  • Dynamic, Per-User Watermarks
  • Stroke Effects to Defeat Screenshots
THATISNOT. — View-Only

Our secure viewer renders documents inside a protected frame. Right-click is disabled. Download buttons don't exist. Printing is blocked. Your slides stay yours.

  • Download Disabled
  • Copy / Print Blocked
Visual Proof

Protected Viewer

Server-rendered page stream with blocked right-click and no raw file exposure.

Watermark Overlay

Per-user watermark identity layer mapped to authenticated account sessions.

What You Can Share

PDF documents

PowerPoint presentations (.ppt, .pptx)

OpenDocument presentations (.odp)

Keynote exports

All files are converted and served from our secure infrastructure — never exposed as raw files.

Who It's For

Professors & Lecturers — Distribute lecture slides to enrolled students without worrying about redistribution outside your class.

Course Creators — Sell access to your PDF guides and slide decks with confidence that paying customers can't just share the file with everyone else.

Tutors & Coaches — Share proprietary study materials with individual students under your own terms.

Institutions — Standardize secure document distribution across departments, with centralized upload and access control.

How It Works

Upload your PDF or presentation (up to 50MB per file)

Share with specific users via email, or keep it private

Viewers open the document in our protected viewer — no download, no copy, no leak

Track who has viewed your document