EDIT: see bottom for additional (positive) impressions and alternatives.

Original Review:

This is almost perfect, but KeePassXC-Browser is having problems with certain websites which require more than a UserID and Password field.

For example, on the American Airlines site, a username, *last name* and PW are required. While KeePassXC allows me to enter additional attributes like "Last Name: Doe" into advanced, there does not seem to be a way to invoke pasting it into the form.

Even If one uses the "choose custom login fields" there is no way to set the last name field as one of the options . . .

Ah, well. At least there is auto-type! :-)

EDIT: The developer is fantastically responsive, as seen below (and I was also e-mail directly with further comments, a nice touch!). I pointed out the built-in documentation (of KeePassXC) is missing the "KPH:" detail (required in KeePassXC-**Browser**) given in the response (but *is* shown in the online docs which I had not yet read).

Hopefully the built-in docs and online docs become better synchronized.

If you anyone still has problems with KeePassXC-Browser, it seems there are other Firefox add-ons which can connect to KeePassXC such as "KeePassHttp-Connector."

Also, standalone add-ons such as "Owl" (not yet reviewed, but much newer than...) or "KeePass Tusk" make the promise of not needing to install a connector to KeePassXC in the first place.