Firefox to end 32-bit Linux support in 2026

Mozilla has announced
that the end is near for Firefox on 32-bit Linux systems:

32-bit Linux is no longer widely supported by the vast majority of
Linux distributions, and maintaining Firefox on this platform has
become increasingly difficult and unreliable. To focus our efforts on
delivering the best and most modern Firefox, we are ending support for
32-bit Linux with the release of Firefox 144 (or to rephrase, Firefox
145 will not have 32-bit Linux support).

If you are currently using Firefox on a 32-bit Linux system, we
strongly encourage you to move to a 64-bit operating system and
install the 64-bit version of Firefox, which will continue to be
supported and updated.

Firefox ESR 140, including 32-bit builds, will receive security
updates 'until at least September 2026'.