Secure Watermarking for DOCX • XLSX • PPTX • PDF

Protect your documents with smart, professional watermarks.

A web-based system that automates watermarking, classification, and storage of documents— purpose-built for ISU projects, capstone defenses, and administrative workflows.

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About the System

This platform streamlines the collection, classification, and storage of documents with embedded watermarks. Built for academic and administrative use, it supports DOCX, XLSX, PPTX, and PDF, with options for pattern-based or text watermarks and QR-enabled verification (via libraries already bundled in your project).

  • Secure watermark overlay with consistent branding
  • Centralized storage and quick retrieval
  • Exportable logs & reports (PDF/Excel)
Security Tip
Use strong secrets in your watermark and keep your account approved by an admin to access full features.
4
Formats
Real-time
Activity Logs

Core Features

Everything you need to protect and manage your files efficiently.

Smart Watermark

Tile pattern watermark with your secret text; consistent placement for each page/slide.

Pattern & text
Storage & Logs

Centralized storage under watermarked_files/ with timestamped filenames and logs.

Auditable
Export Reports

Generate downloadable reports (PDF/Excel) for approvals and documentation.

Downloadable
Role & Approval

Admin approval workflow; only approved accounts can watermark official documents.

Access control

Supported Formats

Use DOCX, XLSX, PPTX, and PDF. Office formats require PHP 8.2+ (server).

DOCX (Word)

Header overlay watermark per section using PhpWord.

PHP 8.2+ needed
XLSX (Excel)

Sheet drawing watermark via PhpSpreadsheet.

PHP 8.2+ needed
PPTX (PowerPoint)

Slide image overlay watermark using PhpPresentation.

PHP 8.2+ needed
PDF

Page-by-page overlay using FPDI. Works on older PHP versions, too.

Ready

Tip: If your server is below PHP 8.2, ask hosting to switch to PHP 8.2+ in cPanel → MultiPHP Manager for full Office support.

How it works

Three simple steps to protect your files.

1 Register & get approved

Create an account and wait for admin approval to access watermark tools.

2 Set your secret watermark

Choose a unique secret or label to embed across pages/slides.

3 Upload & download securely

Upload DOCX/XLSX/PPTX/PDF and download the watermarked copy.

Quick Demo

Try the upload panel. You’ll need to log in to process files.

DOCX, XLSX, PPTX, or PDF
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Secure • Fast • Auditable

Frequently Asked Questions

Quick answers to common questions.

The libraries for Word/Excel/PowerPoint watermarking target PHP 8.2+. PDF watermarking works on older versions via FPDI, but we recommend upgrading PHP in cPanel → MultiPHP Manager to unlock full features.

Watermarked files are stored inside watermarked_files/ with timestamped names for easy tracking and retrieval.

Yes—admins can adjust watermark pattern parameters (tile size, angle, opacity) and we can extend per-format options if needed.

Yes—admins can review account approvals and processing activity in the dashboard.

Need help? Create an account and contact an admin for approval.