Mozilla Firefox

Mozilla Firefox 65.0.1

Improve your browsing experience with Mozilla's open-source and highly acclaimed Firefox Quantum.

Freeware
Windows/macOS/Linux
43.6 MB
298,111
4.4 923 votes

2x faster

Powered by a new, cutting-edge engine, Firefox has doubled its speed from last year. Because the Internet waits for no one.

Note: Mozilla has pulls Firefox 65 for Windows due to an antivirus issue. The Windows version listed here is 64.0.2, other OS remain at version 65.

Lean, mean speed machine

Firefox Quantum’s new engine uses 30% less memory than Chrome, so other programs won’t slow down during browsing. Now that’s a win-win.

Beautiful, intelligent design

Hello, gorgeous! Firefox’s sleek, new look comes loaded with intuitive features like in-browser screenshots and more.

New Tab

Search across multiple sites, view your top pages and discover new content.

Powerful privacy

You’re in control of your online information. Use Firefox Private Browsing to block ads with trackers for extra peace of mind… and pages that load up to 44% faster.

Browse for good

Firefox is backed by the non-profit Mozilla, who keeps the Internet healthier through programs that support tech education for girls, create trust around factual news, bring civility to the comments section and more.

Library

Enjoy everything you’ve saved to Firefox while browsing in one, easy place.

Extensions

Personalize Firefox with your favorite extras that help you do you.

Mobile Browsing

Access your bookmarks, open tabs and passwords across all your devices.

Shape Up Your Floats

CSS Shapes lets a floated element sculpt the flow of content around it beyond the classic rectangular bounding box we’ve been constrained to. For instance, in the above screenshot and linked demo, the text is wrapping to the shape of the grapes vs the image’s border. There are properties for basic shapes all the way up to complex polygons. There are of course great docs on all of this, but Firefox 62 also includes new tooling to both inspect and visually manipulate CSS Shapes values.

You can learn more in Josh Marinacci’s post on the new CSS Shapes tooling from yesterday.

Variable Fonts Are Here

No punny title, I’m just excited! OpenType Font Variations allow a single font file to contain multiple instances of the same font, encoding the differences between instances. In addition to being in one file, font creators can expose any number of variation axes that give developers fine-grained control on how a font is rendered. These can be standard variations like font weight (font weight 536 looks right? no problem!) or things that were never previously available via CSS (x-height! serif-size!). In addition to the candy-store possibilities for typography nerds, being able to serve a single file with multiple variants is a major page weight savings. Dan Callahan goes much deeper on the grooviness to be found and how Firefox makes it easy to tweak these new custom values.

Devtools Commands

The Developer Toolbar was an alternate command repl input in the Firefox Developer tools, apart from the Web Console. I say “was” because as of Firefox 62, it has been removed. It was always a bit hard to find and not as well-advertised as it could be, but did encapsulate some powerful commands. Most of these commands have been progressively migrated elsewhere in the devtools, and this is wrapped up in Firefox 62, so we’ve removed the toolbar altogether.

One of the last commands to be migrated is screenshot, which is a power-user version of the “take a screenshot” button available in the devtools UI. The screenshot command is now available as :screenshot in the Web Console. For example, have you ever needed a high-res screenshot of a page for print? You can specify a higher pixel density for a screenshot via the command: :screenshot --dpr 4

There are a bunch of other options as well, such as specifying output filenames, capture delays, and selector-cropped screenshots. Eric Meyer wrote a great primer on the power of :screenshot on his blog, and it will change your page capture game.

What's New:

  • The display language for the Firefox application UI is now changeable in the Options page
  • Added Windows playback support for the AV1 video codec
  • Added support for the WebP image format
  • Firefox on Windows can now be installed using an MSI installer
  • Firefox now supports Handoff on macOS to continue browsing from your iOS device to your Mac
  • On Linux, tabs can be switched by scrolling in the tab bar
  • Added content blocking, a collection of Firefox settings that offer users greater control over technology that can track them around the web. In 63, the feature is configured to block tracking content only in private browsing sessions. Users can also opt to block third-party tracking cookies and create exceptions for trusted sites that don’t work correctly with content blocking enabled.
  • WebExtensions now run in their own process on Linux.
  • Firefox now warns about having multiple windows and tabs open when quitting from the main menu.
  • On macOS, WebGL power preferences allow non-performance-critical applications and applets to request the low-power GPU instead of the high-power GPU in multi-GPU systems.
  • Improved Windows 10 integration: your Firefox theme now matches your OS Dark / Light mode.
  • Faster tab switching in the majority of cases for our macOS users.
  • Improved the reactivity of Firefox on macOS.

Fixed:

  • Resolved an issue that prevented the address bar from autofilling bookmarked URLs in certain cases

Changed:

  • Updated the Content Blocking section in the Privacy & Security Options page and in the Control Center to simplify blocking options for users
  • Enhanced security for Linux, Android, and macOS users via stronger stack smashing protection being enabled by default
  • Firefox can now be set to warn when exiting, even when configured to automatically restore the session on the next launch
  • Memory usage is also now reported for each resource visible in the updated Task Manager page found at about:performance
  • In the Library, the Open in Sidebar feature for individual bookmarks was removed.
  • The option to Never check for updates was removed from about:preferences. You can use the DisableAppUpdate enterprise policy as a substitute.
  • The Ctrl+Tab shortcut now displays thumbnail previews of your tabs and cycles through tabs in recently used order. This new default behavior is activated only in new profiles and can be changed in preferences.
  • The build infrastructure of Firefox on Windows moved to the Clang tool chain, bringing important performance gains

Developer:

  • Added a new Flexbox inspector tool to detect and highlight Flexbox containers and debug Flex items' sizes
  • All CSS changes made in the Rules panel are now tracked in the new Changes tab
  • Added support for the Storage Access API on desktop platforms
  • Refreshed visual style of Developer Tools menus to improve navigation and consistency
  • The Dev Tools accessibility inspector is now enabled by default. This tool surfaces information exposed to assistive technologies on the current page, allowing you to check what’s missing or otherwise needs attention.
  • Added support for Web Components custom elements and shadow DOM

Unresolved:

  • Quick Heal internet security software might crash 32-bit Firefox on Windows. A workaround is documented from this support article until a fixed version of Quick Heal is available.

Apps similar to Mozilla Firefox 9

  • 4.2
    260 votes
    Chrome combines a minimal design with sophisticated technology to make the web faster, safer, and easier.
    • Freeware
    • Windows
  • 4.2
    150 votes
    Chromium is an open-source browser project that aims to build a safer, faster, and more stable way for all users to experience the web.
    • Freeware
    • Windows/macOS/Linux
  • 4.3
    63 votes
    Custom-built and optimized Firefox browsers for Windows.
    • Freeware
    • Windows
  • More