Hello. Dear matt1510.

Sorry, the question you asked seems difficult to complete.

Because a perfect account security is that each account has a unique password, Firefox can't learn your username and password on other sites.

You can use the address autofill feature. If you don't see it in settings, you can force-enable by adding your two-letter country code to extensions.formautofill.addresses.supportedCountries in about:config then restart the browser.

Hello. Dear matt1510. Sorry, the question you asked seems difficult to complete. Because a perfect account security is that each account has a unique password, Firefox can't learn your username and password on other sites.

Thanks but questions doesnt refer to passwords.

You can use the address autofill feature. If you don't see it in settings, you can force-enable by adding your two-letter country code to extensions.formautofill.addresses.supportedCountries in about:config then restart the browser.

i've tried that and set it to UK. Ive tried to fill in a form and it doesnt seem to work. Perhaps I have to fill in one form and then it wil remember the details? Dunno

You can enable the form autofill and credit card autofill feature by modifying some extensions.formautofill prefs on the about:config page, but no guarantee that this works properly. You ca set extensions.formautofill prefs that have a value of "detect" to "on", close and restart Firefox after changing those prefs.

extensions.formautofill.available = "on"
extensions.formautofill.addresses.supported = "on"
extensions.formautofill.creditCards.supported = "on"
extensions.formautofill.creditCards.available = true (Boolean)

You can enable the form autofill and credit card autofill feature by modifying some extensions.formautofill prefs on the about:config page, but no guarantee that this works properly. You ca set extensions.formautofill prefs that have a value of "detect" to "on", close and restart Firefox after changing those prefs. extensions.formautofill.available = "on" extensions.formautofill.addresses.supported = "on" extensions.formautofill.creditCards.supported = "on" extensions.formautofill.creditCards.available = true (Boolean)

Thanks. Done all those - will see if it works.

I get frm the replies there is no standard way to do this - seems a bit odd as its a feature a lot of people will be used to coming from other browsers (from personal experience I know chrome and safari have this as standard feature).

Firefox can remember form data saved via "Remember search and form history".

• Settings -> Privacy & Security
  Firefox will: "Use custom settings for history": "Remember search and form history"
• https://support.mozilla.org/en-US/kb/control-whether-firefox-automatically-fills-forms

This is different from filling addresses via "Forms and Autofill".

• Settings -> Privacy & Security -> Forms and Autofill
• https://support.mozilla.org/en-US/kb/automatically-fill-your-address-web-forms
• https://support.mozilla.org/en-US/kb/credit-card-autofill

Firefox can remember form data saved via "Remember search and form history".

• Settings -> Privacy & Security
  Firefox will: "Use custom settings for history": "Remember search and form history"
• https://support.mozilla.org/en-US/kb/control-whether-firefox-automatically-fills-forms

This is different from filling addresses via "Forms and Autofill".

• Settings -> Privacy & Security -> Forms and Autofill
• https://support.mozilla.org/en-US/kb/automatically-fill-your-address-web-forms
• https://support.mozilla.org/en-US/kb/credit-card-autofill

Thank you very much.

Works on desktop. Doesn't seem to work on iphone app.

aiwwe0897 said

Hello. Dear matt1510. Sorry, the question you asked seems difficult to complete. Because a perfect account security is that each account has a unique password, Firefox can't learn your username and password on other sites.

Thanks but questions doesnt refer to passwords.

Sorry.