How to Install Extensions (Add-ons) in Mozilla Firefox - How-To Geek
https://www.howtogeek.com/719529/how-to-install-extensions-add-ons-in-mozilla-firefox/
WebMar 23, 2021 · First, open Firefox on your Android phone or tablet and tap the three-dot menu icon in the bottom bar. Next, select "Add-Ons" from the menu. This is the list of available extensions for the Android app. Tap the extension name to see more information, then tap "+" to install the add-on. A pop-up message will explain the required permissions.
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