How I Built a File Converter That Never Touches Your Files published

I've used plenty of online file converters. Most of them upload your files to some server, process them, then (hopefully) delete them. You're trusting a stranger's backend with your documents, photos, or sensitive data. I didn't love that. So I built ConvertifyHub — a file converter that supports 150+ formats and processes everything locally, right in your browser. Your files never leave your device. Here's how I built it and what I learned along the way. The Core Idea: Client-Side Everything Th