[kardos]

You can disable it,

https://support.mozilla.org/en-US/kb/control-whether-firefox...

https://support.google.com/chrome/answer/142893?co=GENIE.Pla...

[flanbiscuit]

For me it pops up a little box under the input asking me to choose if I want to autofill. I like this option because it doesn't autofill without permission but my info is still saved and easily accessible.

[avh02]

autofill actually annoys me, which is why it's one of the first things i disable when setting up my browser(s)