Mozilla Firefox v155.0.1 - Free Download



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 Home » OlderGeeks.com Freeware Downloads » Internet Utilities and Browsers » Mozilla Firefox v155.0.1   
File - Download Mozilla Firefox v155.0.1
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Mozilla Firefox v155.0.1

👉 A fast, customizable web browser with strong privacy protections, security features and a huge library of extensions.

Mozilla Firefox is a free, open-source web browser developed by Mozilla with an emphasis on privacy, security, performance and user control. Firefox includes built-in tracking protection, private browsing, password management, tab organization, synchronization across devices and extensive customization through themes and add-ons. Its independent Gecko browser engine provides an alternative to Chromium-based browsers, while frequent security and feature updates keep the browser current with modern web standards.




Features:
• Enhanced Tracking Protection blocks many social media trackers, cross-site tracking cookies, fingerprinters and cryptominers
• Private Browsing automatically removes browsing information such as cookies and history when sessions are closed
• Built-in password manager saves and securely fills website logins
• Firefox Sync can synchronize bookmarks, passwords, history, open tabs and settings across devices
• Extensive add-on support lets you expand Firefox with thousands of extensions and themes
• Customizable toolbar and browser interface
• Picture-in-Picture lets you watch videos in a floating window while browsing other pages
• Reader View removes distracting page elements for easier reading
• Built-in PDF viewer lets you view and work with PDF documents without additional software
• Tab search and management tools make large numbers of open tabs easier to handle
• Automatic updates deliver security fixes and browser improvements
• Developer tools provide inspectors, debugging, network analysis and responsive-design testing
• Supports modern web standards using Mozilla's independent Gecko browser engine
• Import tools help transfer bookmarks, passwords and other browser data from other browsers
• Available for Intel, AMD and ARM-based systems depending on operating system

Supported operating systems:
• Windows 10, Windows 11
• macOS 10.15 or higher
• Linux 64-bit, Linux ARM64/AArch64

Supported languages:
English (US)

Changes:
v155.0.1 09-04-26
Fixed Firefox becoming unresponsive on some pages that use CSS blur and backdrop filters together.
Fixed the sidebar not reappearing after restarting Firefox when the "Hide tabs and sidebar" option was turned on.
Fixed some profile icons not being displayed in the account and application menus.
Fixed the current device being listed among connected devices in the account menu.
Known issue: Standard dynamic range (SDR) video in some formats can appear washed out on macOS. Mozilla is investigating the issue for a future release.





This download is for the Windows 64bit version (very bottom of page).
All other download assets are below:


Other Windows:
Firefox Setup32bit 155.0.1.exe
Firefox SetupARM 155.0.1.exe

macOS:
Firefox 155.0.1.dmg

Linux:
firefox-155.0.1.tar.xz
firefoxARM-155.0.1.tar.xz


Click here to visit the author's website.
Continue below for the main download link.


Downloads Views Developer Last Update Version Size Type Rank
12,770 27,397 Mozilla Sep 13, 2026 - 15:13 155.0.1 87.47MB EXE 5/5, out of 106 Votes.
File Tags
Browser  Mozilla  Firefox  Web  Privacy  Security  Tracking  Extensions  Tabs  Passwords  Bookmarks  Internet  Gecko  OpenSource  
      
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