Show HN: I made a progressive web app for https://xkcd.com

Any xkcd fans here? I made a progressive web app for xkcd, with all the usual features of a pwa(offline loading, installable etc.) I made this to learn about service workers and performance optimisations, so comments and feedback are welcome.

My bad. Should've tested it on browsers other than chrome. It is working now on Safari btw, please check it out if you get a chance.