Mozilla Archive Format, with MHT and Faithful Save

5 ਤਾਰਿਆਂ ਵਿੱਚ 5 ਮਿਲੇ

ਵੱਲੋਂ Firefox user 9fc10c ਨਵੰ 1, 2017 ਤੇ · ਪਰਮਾਲਿੰਕ

This app is invaluable and I have many files stored in this format.
I just can not be without it. Will I be forced to use older versions of Firefox?
Or even better, I stop using FF at all.