FF used to remember and autofill CC information, but about 10 years ago they removed it for security reasons. But this blog post from last 2017 says they were a

FF used to remember and autofill CC information, but about 10 years ago they removed it for security reasons. But this blog post from last 2017 says they were adding the option to securely store and autofill CC information: https://blog.mozilla.org/firefox/online-shopping-autofill-credit-card-info-safely-firefox/ https://blog.mozilla.org/firefox/online-shopping-autofill-cr... However, the feature is still not available, probably because of nagging security worries. Apparently it can be enabled in a nightly build if you edit a config: option: https://wiki.mozilla.org/Firefox/Features/Form_Autofill https://wiki.mozilla.org/Firefox/Features/Form_Autofill