Neat idea!

Fun fact; it's not as widely usable but data URLs work for this too.

Maybe you could add an option to copy the data URL for a page?

e.g. this one

https://bigwords.page/#%23%20Gate%2012%0ABoarding%20now&bg=0...

becomes

data:text/html,<!doctype html><meta name=viewport content="width=device-width,initial-scale=1"><body style="margin:0;height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;background:%230b3d91;color:%23fff;font-family:sans-serif;text-align:center"><h1 style="font-size:18vw;margin:0">Gate 12</h1><p style="font-size:9vw;margin:0">Boarding now</p>

(paste this ^^ into your URL bar)