rendermw — Zero-Dependency Dynamic Rendering Middleware for Express SPAs Single-page applications solved frontend UX years ago. SEO is still a mess. Most React/Vue/Angular SPAs ship an almost empty HTML document to crawlers: <div id= "root" ></div> Enter fullscreen mode Exit fullscreen mode Humans eventually see content after hydration. Bots often don't. That creates problems with: search indexing, Open Graph previews, structured data, link unfurling, and crawl reliability. Most existing solutions are operationally expensive: headless Chrome clusters, Puppeteer rendering, external prerender APIs, or full SSR rewrites. I wanted something much smaller and much more deterministic. So I built rendermw . What is rendermw? rendermw is a zero-dependency Express middleware that dynamically serves semantic HTML to bots while real users continue receiving the normal SPA. No Puppeteer. No Chromium. No external rendering services. No framework lock-in.…