Firefox Beta Вђ” Web Browser -

is the pre-release version of the Mozilla Firefox web browser, designed for users who want to test upcoming features before they are officially launched to the general public . It serves as a middle ground between the highly unstable Nightly builds (alpha) and the polished Standard release. Key Features (April 2026)

: On desktop, the Beta version often acts as an upgrade to the standard version rather than a separate installation, which can alter your existing user profile. Release Notes - 148.0beta Firefox Beta Firefox Beta — Web Browser

: Automatically blocks notifications and revokes permissions for sites flagged as malicious by SafeBrowsing to prevent spam or phishing. is the pre-release version of the Mozilla Firefox

: It is less stable than the standard release and may experience occasional crashes or performance issues. Release Notes - 148

: A native multitasking tool that allows users to view two web pages side-by-side in a single window for easy comparison.

: Users eager to try "unbaked" features about 4–6 weeks before the masses.