I Built 17 Chrome Extensions as a Solo Developer — Here's What I Learned

I'm a solo developer from Japan running S-Hub , a portfolio of 17 Chrome extensions. Over the past year, I've built tools for digital wellbeing, productivity, e-commerce, and Japan-specific use cases. In this post, I'll share what I built, why I built them, and the lessons I learned along the way. The Numbers 17 extensions published 350+ total users 8 languages supported per extension $0 external development costs (all client-side processing) 1 developer (me) Why 17 Extensions? It started with solving my own problems. I was frustrated with YouTube Shorts hijacking my feed. Then I wanted a cleaner Twitter experience. Then I needed a prompt manager for AI tools. Each extension began as a personal itch I needed to scratch. The philosophy: if it bothers me, it probably bothers others too . The Extensions (by Category) 🧘 Digital Wellbeing Shorts Killer — My Most Popular Extension The Problem: YouTube Shorts are designed to be addictive. I'd open YouTube to watch one tutorial and end up scro