CASE STUDY

InstantWatermarker

Windows Software • Productivity

Project Overview

Windows application for automatic PDF document watermarking with batch processing capabilities.

Context & Challenge

Businesses need to protect sensitive documents with watermarks but manual application is time-consuming. Existing solutions are often expensive or lack batch processing capabilities.

Client Objectives

• Enable one-click watermark application to PDFs
• Support batch processing for multiple documents
• Provide customizable watermark options
• Ensure output quality and file integrity

UX Research & Architecture

User workflow analysis identified common watermarking scenarios. We designed presets for frequent use cases (confidential, draft, copy) while enabling full customization.

UI Design & Design System

Clean Windows application interface following platform conventions. Drag-and-drop file handling, clear progress indicators, and organized settings panel. Preview functionality before processing.

Development & Technologies

C#/.NET provides native Windows integration. PDFsharp library handles PDF manipulation while preserving document integrity. Batch processing with progress tracking for large document sets.

Tech Stack: C#, .NET Framework, WPF, PDFsharp, Batch Processing, Windows Registry

Results & Business Value

• Watermarking time reduced from minutes to seconds
• Batch processing handling hundreds of documents
• Customizable watermarks meeting various needs
• Document integrity preserved through processing