I've been making some small incremental improvements on brethudson.com - it's written in Express.js & vanilla JS on the front-end, with code that's been modified since 2019 (we're talking Node.js v10!!) I just finally implemented proper detection for if the thumbnails/webp versions of images need to be generated on the server, and brought down my server's startup time from 15s-25s to 800ms 🙏