Hi,
I’ve recently rebuilt a former WP site with Node.js using MongoDB and Express.
Now I’m struggling to adhere to PageSpeed Insights. Despite the fact that I’m using a proxy, nginx’s gzip compression works well by simply enabling it in my {server} block. Images, on the other hand, are cached by Express using .static() but now Google asks me to compress images. I’ve googled a lot and also ran an exhaustive search on npm but it doesn’t seem to be an answer out there. Where should I work? nginx? Express? Both?

Thanks in advance.