What Exactly Do HTTP Headers Do and Why Should You Care? or Can Someone Explain What HTTP Headers Do

wow, didn’t realize http headers do so much! the dev tools trick is a game-changer—seeing them live makes way more sense than docs.

quick q: if i mess with headers (like deleting `Cache-Control`), could that break stuff? also, any tools to test headers without coding?

thanks for the links too, httpbin.org is super clean for testing. y’all are legends!