What does HackerNews think of lazysizes?

I recently did some optimizations on my personal website to make the images load “lazily.” In other words it only loads stuff once it hits the viewport. I think that’s what you’re looking for. I tried two techniques:

1. There is an HTML attribute to do just this and it seems to work for iframes too: https://developer.mozilla.org/en-US/docs/Web/Performance/Laz...

2. There is a simple library called “lazy sizes” (https://github.com/aFarkas/lazysizes)

I tried to avoid the lib and use the native HTML… but for whatever reason the lib worked more reliably/effectively in manual tests as well as in my benchmarking via PageSpeed / Lighthouse. YMMV!

Ironic indeed, but then the blog itself doesn't use React, the slowdown most likely comes from some utility library[1]. The advice in the article may not be discredited, but this shows that learning basic profiling should come before obsessing over framework-specific optimizations.

[1]: https://github.com/aFarkas/lazysizes