Firefox Beta Вђ” Web Browser May 2026

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)

As of April 2026, Firefox Beta (Version 151.0) and recent builds have introduced several advanced capabilities: Firefox Beta вЂ” 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

: 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 вЂ” Web Browser