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Firefox 146 vs 139
Version Support Lifecycle Comparison
vs
Version 146
146
Active
Release Date2025-12-09
Support Ends-
EOL DateTBD
Latest Version146.0.1
Version 139
139
End of Life
Release Date2025-05-27
Support Ends-
EOL Date2025-06-24
Days LeftExpired 252 days ago
Latest Version139.0.4
💡 Upgrade Recommendation
146 currently has a longer support lifecycle. If you're using 139, keep an eye on its EOL date.
About Version Comparison
This page compares Firefox versions 146 and 139. Learn about each version's release date, support end date, and EOL (End of Life) date to make informed upgrade decisions.
Other Version Comparisons
146 vs 145146 vs 144146 vs 143146 vs 142146 vs 141146 vs 140146 vs 139146 vs 138146 vs 137145 vs 144145 vs 143145 vs 142145 vs 141145 vs 140145 vs 139145 vs 138145 vs 137144 vs 143144 vs 142144 vs 141144 vs 140144 vs 139144 vs 138144 vs 137143 vs 142143 vs 141143 vs 140143 vs 139143 vs 138143 vs 137142 vs 141142 vs 140142 vs 139142 vs 138142 vs 137141 vs 140141 vs 139141 vs 138141 vs 137140 vs 139140 vs 138140 vs 137139 vs 138139 vs 137138 vs 137
Showing comparisons for the latest 10 versions. Firefox has 47 versions total.