How I built a 13-tool Micro-SaaS with $0 server costs using React and Web APIs

If you've ever tried building a SaaS or a tool aggregator, you know the drill: file uploads equal server costs. Processing PDFs or stripping image backgrounds usually requires setting up a backend, managing storage (like AWS S3), and dealing with potential privacy liabilities. I was tired of uploading my sensitive files to random "free" tools that hit me with paywalls or forced me to create accounts. So, I challenged myself: Could I build a comprehensive toolbox where every single task runs 100%