How to properly use autocomplete in KeePassX?

Question

Information Security

I have been using LastPass for the last many years, but I am constantly tormented by the thought that passwords are stored "out there" and not with me.
The only time-tested alternative for storing passwords is KeePassX.
But what always stops me from switching to KeePassX is the lack of autofill.
More precisely, it is, even regular, but

• there is no binding to the site (domain) (and such binding is a good anti-phishing), but there is an inconvenient binding to the title of the window, which can generally be dynamic,
  
• the binding cannot be automatically saved, and I often register in many places. Well zadolbata to enter hands.
  
• Plus, it’s generally not clear how to choose the desired login if there are several accounts for the site.
  

LastPass solves these problems at once.
Yes, there seem to be plugins for browsers, but, as far as I understand, they are not official. Those. this is not an option at all - it's better to continue using LastPass, tk. more confidence in him.
Tell me, please, maybe I don’t fully understand something in setting up and using KeePassX?

Answer 1

I can share the experience of life with KeePass + Firefox ESR.
In Firefox, the window title is changed using the KeePass Helper add-on (in Firefox 57+, there seem to be analogues). The domain name is added to the standard window title. KeePass is configured for this addition.
For example, on a toaster, the entrance is made on the site id.tmtm.ru. In KeePass, in the entry properties, it is indicated that auto-typing should be performed if the window name matches the following patterns:
My autotype is set to Ctrl+Alt+A. If there is only one matching entry, autodial occurs immediately. If there are several, pressing Ctrl+Alt+A will bring up a window where you can select the required entry.
You can specify how autodialing occurs. For example, the site first requires you to enter a login, then click on a button, then enter a password. It is specified something like this: { USERNAME
}{ENTER}{DELAY 2000}{PASSWORD}{ENTER}
but I never used it. Perhaps it also solves the problem with auto-remembering credentials.
How can you trust an open source plugin with any name less than a closed tracker - I don’t understand at point blank range.
Of the convenient bonuses - the introduction of passwords not only in the browser: for example, for GPG and SSH keys, for Thunderbird, and so on.
Here is a nice series of several articles on setting up and using KeePass.