About the app
A fast, offline, and privacy-first Windows desktop utility built for batch image conversions across formats like JPG, PNG, WEBP, and multi-size Windows ICOs.
Problem
Daily design and engineering tasks require frequent image conversions across formats like WebP, PNG, and ICO. Most users rely on third-party online converters that compromise privacy, enforce strict file size caps, queue conversions slowly, and clutter screens with deceptive advertisements.
Solution
Engineered an open-source, local-first Windows application capable of instant single and batch image conversions without touching the cloud. The tool supports seamless conversion across JPG, PNG, WEBP, BMP, GIF, TIFF, and multi-size Windows icon packages (16, 32, 48, 256 px) with automated directory handling and low resource overhead.
App details
- Release date
- Oct 2026
- Status
- Shipped
- Genre
- Tool
- Type
- Personal project
- Platforms
- Desktop
- Target Audience
- Developers, UI/UX designers, and power users who need reliable, offline batch image conversion on Windows.
- My Role
- Creator and Lead Developer.
- Duration
- < 1 mth
Feature Highlights
100% Offline & Private
Zero network traffic, no server uploads, and no tracking. All conversion operations execute strictly on local machine hardware.
Batch & Folder Conversions
Effortlessly drag and drop dozens of files or entire directory trees to process batch transformations in parallel.
Multi-Size Icon Engine
Built-in support for generating native Windows .ico files containing bundled 16, 32, 48, and 256 px resolution layers.
Lightweight & Fast
Clean modern interface built with low idle memory consumption, providing instantaneous exports without bloat.
Technologies & skills
- Git & GitHub
- AI-Assisted Development
- Python
- Pillow (PIL)
- CustomTkinter
- GitHub Actions
- CI/CD Pipeline
- Desktop Application
Lessons Learned
Standard developer workflows are vastly improved by simple, single-purpose utilities that execute locally in seconds without friction, accounts, or telemetry overhead.
