Firefox 140 Enters Beta Testing as the Next ESR
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Firefox 140 Enters Beta Testing as the Next ESR (Extended Support Release) Series

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MN
Marius Nestor
Jun 4, 2025

Firefox 140 promises a new Unload Tab feature that lets you unload tabs by right-clicking on a tab (or multiple selected tabs to reduce Firefox’s memory and CPU usage, support for adding custom search engines in Search settings, and support for keeping more or fewer pinned vertical tabs in view. For Android users, it adds a “Select All” option for bookmarks.
MN

Marius Nestor

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