Firefox For Mac 39

Posted By admin On 25.03.21

Warning: Firefox now includes downgrade protection to prevent corruption of user profile data. If you install an older version, you'll be prompted to create a new Firefox profile.

If there is a problem with a new version of Firefox, some people may want to downgrade Firefox to a previous version but we do not recommend this. The latest Firefox version includes security updates so downgrading to an older version leaves you more vulnerable to attacks and usually doesn't fix the problem. This article gives you some alternatives to downgrading and links to older versions of Firefox, if you do choose to downgrade.

Firefox is an Internet browser for Windows. Mozilla Introduces the most customizable Firefox ever with an elegant new design. The new version of Firefox comes with new features and a new design that can be customized to the user's linking. This new version allows you to surf the Internet faster.
Get Firefox, a free web browser backed by Mozilla, a non-profit dedicated to internet health and privacy. Available now on Windows, Mac, Linux, Android and iOS.

Mozilla Firefox Portable 55.0.3 released: 30 Aug 2017 - 3 years ago; Mozilla Firefox Portable 40.0.2 released: 17 Aug 2015 - 5 years ago; Mozilla Firefox Portable 39.0 released: 06 Jul 2015 - 5 years ago; Mozilla Firefox Portable 38.0.5 released: 04 Jun 2015 - 5 years ago; Mozilla Firefox Portable 38.0.1 released: 18 May 2015 - 5 years ago. Drag the Firefox App into your Applications folder. Once it has finished copying, eject the disk image for Firefox from your desktop by dragging it to Trash. You'll be asked for permission to run Firefox, select Open. Firefox will open.

Problems with an update are usually not caused by the new version of Firefox, but rather the update process. In most cases, installing a previous version will not help. Instead, see:

Note: Other problems can be solved with the Refresh Firefox feature. It restores Firefox to its default state while saving your essential information.

Ensure all security and security-related software is fully updated. Some security software will need to be upgraded to a new version so that it is compatible with each Firefox version update.

Optional software bundled with security software also may need updating. Such software may not be essential for your security but, if outdated, may interfere with the use of Firefox or cause Firefox to crash.

If you still want to downgrade, you can visit Mozilla's directory of older Firefox versions using the links below. Please note, however, that using older versions can make Firefox insecure and more vulnerable to attacks and scams. We recommend that you always use the newest version of Firefox.

Warning: Old Firefox versions pose a significant security risk.

Firefox 67.0.432-bit (US English)
Firefox 67.0.464-bit (US English)

Firefox 67.0.432-bit (US English)
Firefox 67.0.464-bit (US English)

Firefox 68.0.232-bit (US English)
Firefox 68.0.264-bit (US English)

Firefox 68.0.232-bit (US English)
Firefox 68.0.264-bit (US English)

Firefox 69.0.332-bit (US English)
Firefox 69.0.364-bit (US English)

Firefox 69.0.332-bit (US English)
Firefox 69.0.364-bit (US English)

Firefox 70.0.132-bit (US English)
Firefox 70.0.164-bit (US English)

Firefox 70.0.132-bit (US English)
Firefox 70.0.164-bit (US English)

Firefox 71.032-bit (US English)
Firefox 71.064-bit (US English)

Firefox 71.032-bit (US English)
Firefox 71.064-bit (US English)

Firefox 72.0.232-bit (US English)
Firefox 72.0.264-bit (US English)

Firefox 72.0.232-bit (US English)
Firefox 72.0.264-bit (US English)

Firefox 73.0.132-bit (US English)
Firefox 73.0.164-bit (US English)

Firefox 73.0.132-bit (US English)
Firefox 73.0.164-bit (US English)

Firefox 74.0.132-bit (US English)
Firefox 74.0.164-bit (US English)

Firefox 74.0.132-bit (US English)
Firefox 74.0.164-bit (US English)

Firefox 75.032-bit (US English)
Firefox 75.064-bit (US English)

Firefox 75.032-bit (US English)
Firefox 75.064-bit (US English)

Firefox 76.0.132-bit (US English)
Firefox 76.0.164-bit (US English)

Firefox 76.0.132-bit (US English)
Firefox 76.0.164-bit (US English)

Firefox 77.0.132-bit (US English)
Firefox 77.0.164-bit (US English)

Firefox 77.0.132-bit (US English)
Firefox 77.0.164-bit (US English)

Firefox 78.0.232-bit (US English)
Firefox 78.0.264-bit (US English)

Firefox 78.0.232-bit (US English)
Firefox 78.0.264-bit (US English)

Firefox 79.032-bit (US English)
Firefox 79.064-bit (US English)

Firefox 79.032-bit (US English)
Firefox 79.064-bit (US English)

Firefox 80.0.132-bit (US English)
Firefox 80.0.164-bit (US English)

Firefox 80.0.132-bit (US English)
Firefox 80.0.164-bit (US English)

Firefox 81.0.232-bit (US English)
Firefox 81.0.264-bit (US English)

Firefox 81.0.232-bit (US English)
Firefox 81.0.264-bit (US English)

Download Firefox 39 For Mac

Firefox 82.0.332-bit (US English)
Firefox 82.0.364-bit (US English)

Firefox 82.0.332-bit (US English)
Firefox 82.0.364-bit (US English)

Firefox 83.032-bit (US English)
Firefox 83.064-bit (US English)

Firefox 83.032-bit (US English)
Firefox 83.064-bit (US English)

Firefox 84.0.232-bit (US English)
Firefox 84.0.264-bit (US English)

Firefox 84.0.232-bit (US English)
Firefox 84.0.264-bit (US English)

Important: By default, Firefox is set for automatic updates. To prevent Firefox from automatically updating itself after you install an older version, you'll need to change your Firefox update settings: Click the menu button and select .. In the General panel, go to the Firefox Updates section.

Instead of downgrading to an older, insecure version of Firefox and changing your update settings, you should consider these alternatives:

Install Firefox Extended Support Release.Firefox Extended Support Release (ESR) is an official version of Firefox developed for large organizations such as universities and businesses. Firefox ESR does not come with the latest features, but it does have the latest security and stability fixes. For more information, see the article Switch to Firefox Extended Support Release (ESR) for personal use.

Use the latest version of another browser. If you are not satisfied with the current Firefox version or it simply is not working right now, there are alternative browsers that you can use to browse the web.

Freeware

macOS

124 MB

29,004

2x faster

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

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.

Mozilla Firefox 39.0 For Mac

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.

Firefox For Mac 2020

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.

Mo’ Pixels, Mo’ Panels

Do you have a 4k monitor? Do your browser windows bathe in a wash of ample screen real-estate? Let your devtools stretch their legs with a new 3-column mode in the Page Inspector. You can now pop the CSS Rules view into its own column, to let you view style information and the excellent Grid tooling or Animations panel side-by-side.