Responsive images

[hlabrand]

Would it be helpful to have a small function that displays an image if the screen is large and another one if it is small? It's just putting divs with the right CSS (sm-only or lg-only) and the right picture in them, but I wrote that piece of code 5 times and it could be automated. Or maybe it should be in an extension?

[juhana]

My immediate reaction is that it should not be in the core library because in the "normal" case CSS should resize the images automatically, but I'll think about it a bit more.