How can I set up for user id and password to automatically sign in
when I want to go to a website I'd like my username and password to automatically sign in.
Opaite Mbohovái (2)
have a look at this article:
Usernames and passwords are not saved
also, the following article may come handy:
Password manager - Remember, delete, change and import saved passwords in Firefox
Websites remembering you and automatically log you in is stored in a cookie.
- Create an allow Cookie Exception to keep such a cookie, especially for secure websites and if cookies expire when Firefox is closed.
- Tools > Options > Privacy > Cookies: Exceptions
In case you are using "Clear history when Firefox closes":
- do not clear the Cookies
- do not clear the Site Preferences
- Tools > Options > Privacy > Firefox will: "Use custom settings for history": [X] "Clear history when Firefox closes" > Settings
- https://support.mozilla.org/kb/Clear+Recent+History
Note that clearing "Site Preferences" clears all exceptions for cookies, images, pop-up windows, software installation, and passwords.
Clearing cookies will remove all specified (selected) cookies including cookies that have an allow exception and cookies from plugins.