I Built a Fast UUID Generator with Bulk Support — Here’s What I Learned

Over the past few weeks, I built a small developer tool project: a clean and fast UUID generator that supports multiple versions and bulk generation. It started as a simple side project, but I ended up learning a lot about SEO, SPA indexing, and performance optimization. Here’s what I built and what I learned. 🔧 What The Tool Does The tool supports: UUID v1 (time-based) UUID v4 (random-based) UUID v7 Nil UUID GUID format Bulk UUID generation (up to 500 at once) One-click copy TXT download support I focused on keeping it: Fast Minimal Mobile-friendly Developer-first 🛠 Tech Stack React (Vite) TypeScript React Router react-helmet-async (for SEO) Google Analytics 4 (event tracking) Automated sitemap generation 📈 What I Learned About SEO for Tool Websites This was the most interesting part. At first, I thought: “If I submit to Google, traffic will come.” Wrong 😅 Here’s what I discovered: Indexing ≠ ranking Tool-only pages don’t rank well without content Internal linking is very important Si