Why can't built-in browser (like in Google Chrome and Firefox) password managers can't handle exact URLs? There is nothing worse than password manager that tries to fill your password in wrong fields.
Keepass HTTP connector which I've been using also can do it, but browser extensions for that has gone unmaintained. I'm planning to write my own, but it's one of those chore tasks I'd rather not.
I noticed recently that an old blog site of mine stopped loading its styles.css and so displayed see as a horrible mess. Nothing has changed on the site, just the browser.
The reason?
Today's browsers (ie anything #Chrome based) are becoming authoritarian about what they will display. This isn't a security issue, but an increasing stringency on something that makes no sense at all.
The solution?
Remove <!DOCTYPE> and pretend you're an old website, so they need to display as it was. 🤷♂️ 🤦♂️