Firefox 91
Firefox 91 reached end of life 4 years ago.
Supported now: Firefox 115 (LTS until 2027-03-31), Firefox 153 (no announced date), Firefox 158 (until 2026-10-27)
Facts
- Released
- (5 years ago)
- Security support ended
- (4 years ago)
- Latest release
- 91.13.0, (4 years ago)
- LTS
- yes
- Source
- endoflife.date (checked 2026-09-09)
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