ProBill

ProBill is a desktop billing application designed for local shopkeepers and wholesalers. It features a unique architecture where web-based billing interfaces (built with HTML, CSS, JS) are securely bundled into native C++ executables using machine code conversion, eliminating the need for web deployment while maintaining browser-like functionality.

Technologies Used

C++CMakeWebView2HTMLCSSJavaScriptPDF GenerationEncryption

Software Info

Completed

startDate: 2025-10-01

endDate: 2025-10-07

teamSize: 1

role: Solo Developer

platform: Desktop (Windows)

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User-friendly billing interface

Software Specifications

System Requirements

Windows 10+

4GB RAM minimum

500MB storage space

WebView2 runtime

Supported Formats

PDF export

Local data storage

WebView2 rendering

Key Features

Secure web-to-native conversion without deployment

Fast and lightweight desktop execution

PDF bill generation

Billing history with editing and sorting

User-friendly interface for shopkeepers

Low memory footprint

Works on standard PCs

Real-time billing calculations

Technical Challenges

Technical Challenge 1

Problem:

Converting web frameworks to machine code securely

Solution:

Developed custom C++ wrapper with WebView2 integration and encryption

Result:

Secure bundling without compromising functionality

Technical Challenge 2

Problem:

Optimizing performance and memory usage

Solution:

Implemented efficient resource management and code optimization

Result:

Lightning-fast execution with minimal memory usage

Design Challenges

Design Challenge 1

Problem:

Creating intuitive billing interface for non-technical users

Solution:

Designed simple, clean UI with guided workflows

Result:

Easy adoption by shopkeepers and wholesalers

Design Challenge 2

Problem:

Managing data persistence and history

Solution:

Implemented local database with sorting and editing capabilities

Result:

Comprehensive billing history management

Results Achieved

Successfully used by local shopkeepers and wholesalers

Adopted by real customers for daily billing operations

Lightning-fast performance with low resource usage

No deployment required, works offline

What I Learned

Machine code conversion and optimization

Encryption techniques for secure bundling

WebView2 integration with native applications

Cross-platform desktop development

Development Journey

Concept Phase: Web-to-native conversion research

Prototype Phase: Basic WebView2 integration

Core Development: Billing functionality and PDF generation

Security Phase: Encryption and machine code bundling

Testing Phase: Real-world testing with shopkeepers