Firefox Preview is an early version of Mozilla’s new browser for Android. Firefox Preview has been rebuilt from the ground up using GeckoView, Mozilla’s new mobile browser engine, for a faster, sleeker experience. See [[What’s the difference between Firefox Preview and Firefox for Android?]] for more information. __TOC__ =Extension compatibility for Firefox Preview= We are currently building support for an initial selection of [[Recommended Extensions program | Recommended Extensions for Firefox Preview]]. These extensions are expected to be officially supported for Firefox Preview during the first half of 2020. While some members of the community have discovered that some extensions (Recommended and non-Recommended) inadvertently work in Firefox Preview, we do not recommend attempting to install them until they are officially supported as other issues may arise. =Theme compatibility for Firefox Preview= Due to Firefox Preview’s minimal user interface (UI), themes will not be supported.

Firefox Preview is an early version of Mozilla’s new browser for Android. Firefox Preview has been rebuilt from the ground up using GeckoView, Mozilla’s new mobile browser engine, for a faster, sleeker experience. See What’s the difference between Firefox Preview and Firefox for Android? for more information.

Extension compatibility for Firefox Preview

We are currently building support for an initial selection of Recommended Extensions for Firefox Preview. These extensions are expected to be officially supported for Firefox Preview during the first half of 2020.

While some members of the community have discovered that some extensions (Recommended and non-Recommended) inadvertently work in Firefox Preview, we do not recommend attempting to install them until they are officially supported as other issues may arise.

Theme compatibility for Firefox Preview

Due to Firefox Preview’s minimal user interface (UI), themes will not be supported.