Firefox 151.0.3

Firefox is a fast, secure, and privacy-focused browser with tracking protection, cross-device sync, and a highly customizable interface.

Razvan Serea News Reporter Neowin · Jun 1, 2026 23:32 EDT with 0 comments

Firefox

Firefox is a fast, full-featured Web browser. It offers great security, privacy, and protection against viruses, spyware, malware, and it can also easily block pop-up windows. The key features that have made Firefox so popular are the simple and effective UI, browser speed and strong security capabilities.

Firefox has complete features for browsing the Internet. It is very reliable and flexible due to its implemented security features, along with customization options. Firefox includes pop-up blocking, tab-browsing, integrated Google search, simplified privacy controls, a streamlined browser window that shows you more of the page than any other browser and a number of additional features that work with you to help you get the most out of your time online.

Firefox key features

Enhanced Tracking Protection (ETP) – Blocks trackers, cookies, cryptominers, and fingerprinters by default.
Private Browsing Mode – Deletes history, cookies, and temporary files when closed.
Lightweight & Fast Performance – Optimized memory usage with efficient page loading.
Cross-Platform Sync – Sync bookmarks, passwords, history, and open tabs across devices.
Customizable Interface – Toolbars, themes, and extensions can be tailored to user needs.
Strong Privacy Controls – Options to manage cookies, permissions, and site data easily.
Reader Mode – Strips away clutter for distraction-free reading.
Pocket Integration – Save and read articles offline with Pocket built into Firefox.
Picture-in-Picture (PiP) – Watch videos in a floating window while multitasking.
Extensions & Add-ons – Vast library for productivity, security, and personalization.
Built-in PDF Viewer – No need for external software to view PDFs.
Firefox Monitor – Alerts users if their email is part of a known data breach.
Multi-Account Containers – Isolate browsing sessions (e.g., work, personal, shopping).
Performance & Resource Efficiency – Uses fewer system resources than some competitors.
Open Source & Community-Driven – Transparent development with global contributions.

Firefox 151.0.3 fixes:

Fixed an issue where selecting or pasting text in a text field inside a table cell could disrupt the page layout. (Bug 2041235)
Fixed an issue where the VPN toolbar button icon could appear larger than intended. (Bug 2042454)

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