Responsive image management with Hugo
As a believer in text is king, I store all my content in markdown formatted plain text.
You know, like grandpa used to do on punch cards but now with links and more octothorpes.
Alongside text, I reference images in said text with a  snippet.
In turn, this ends up as HTML rendered by Hugo for browsers to consume.
By default, Joe Public viewing the blog receives that image byte for byte as I saved it even when a much smaller image that looks visibly indistinguishable would do.