Mozilla Announces Firefox 48 for Desktop With Multi-Process Support - MacRumors
Skip to Content

Mozilla Announces Firefox 48 for Desktop With Multi-Process Support

by

Mozilla announced the release of Firefox 48 for desktop yesterday, introducing a long-awaited multi-process feature to the browser along with a handful of interface tweaks.

Firefox 48 is the first version of the browser to include Electrolysis (or e10s), a multi-process feature Mozilla developers have been working on for over seven years.

firefox
Multi-process Firefox separates web content and UI processes, so that when a web page is consuming a large amount of processing power, other open tabs, buttons, and menus don't become unresponsive. Mozilla says it will be activating the feature behind the scenes in a staggered rollout for Firefox 48 users over the next few weeks.

While Safari and Chrome browsers have offered a similar feature for some time, this version of Firefox is also running Mozilla's Rust language, which is designed to offer performance comparable to C++, but without the latter's susceptibility to security flaws. Firefox 48 also blocks Adobe Flash Player by default, as the big online media companies like YouTube increasingly switch to HTML5.

Elsewhere, Mozilla has improved the Awesome Bar, which now offers more relevant search suggestions, while the Discovery Pane has been redesigned to make it easier to read. In addition, Reading Lists have been merged into Bookmarks and Synced tabs have been relocated to the History Panel.

Lastly, version 48 also ships security improvements that enhance download protection in Firefox, such as flagging uncommon downloads that appear to mimic popular installation packages for malicious purposes.

Firefox 48 is a free download for the Mac, though users of older Mac system should be aware that it drops support for OS X versions older than 10.9 Mavericks. [Direct link]

Tag: Firefox

Top Rated Comments

T'hain Esh Kelch Avatar
129 months ago
People still use FF? It kept getting slower and slower. Chrome ftw.
Oh, just about 100 million people I believe.
Score: 15 Votes (Like | Disagree)
keysofanxiety Avatar
129 months ago
People still use FF? It kept getting slower and slower. Chrome ftw.
Yuck, Chrome is even worse.

Firefox on Windows/Linux, Safari on OS X.
Score: 13 Votes (Like | Disagree)
129 months ago
Such a great browser.
Score: 4 Votes (Like | Disagree)
129 months ago
People still use FF? It kept getting slower and slower. Chrome ftw.
Score: 4 Votes (Like | Disagree)
VAGDesign Avatar
129 months ago
Handy for laptops mostly ;)
Score: 4 Votes (Like | Disagree)
129 months ago
People still use FF? It kept getting slower and slower. Chrome ftw.
I use all five browsers side-by-side — Safari as my primary, Firefox for one of my work apps, Brave for another, and Chrome and Opera to do various website testing in. It's silly for people to think they must choose and use only a single browser for all web browsing in this day and age. Each has its strengths, and running them side-by-side can improve productivity.
[doublepost=1470231862][/doublepost]
I can't get over the fact how terrible the interface feels compared to most other OS X apps. As if it never left the Mac OS 9 era. Trashed it immediately.
I think the Mozilla team realized that and the interface improved drastically many versions ago. It now feels much more "native" on the Mac. Still not 100%, and they bring over some Windows conventions, but overall, it's a huge improvement to how it used to be, and it actually looks and feels pretty good these days.
Score: 3 Votes (Like | Disagree)

Popular Stories

iCloud iPhone 17 Pro

iPhone Users Who Pay for iCloud Storage Get Two New Perks on iOS 27

Thursday July 2, 2026 6:10 am PDT by
If you pay for certain iCloud+ storage plans beyond the 5GB that Apple offers for free, you will receive two more perks on iOS 27 at no additional cost. A summary of the two new iCloud+ perks on iOS 27:Increased daily usage limits for some new Apple Intelligence features, including image generation in the revamped Image Playground app. HomeKit Secure Video cameras receive generated video...
Apple Event Logo

Apple Just Released a New Product

Thursday July 2, 2026 8:04 am PDT by
Apple's first product release of summer 2026 occurred this week, but do not get too excited, as it is merely the Beats Solo Buds in a new color. Beats Solo Buds are now offered in orange through Best Buy in the U.S., with availability set to expand to 7-Eleven stores in Japan on July 4. Apple already offered orange Solo Buds in India for free with the purchase of an iPhone 15 or iPhone 15 ...
iPhone 4 on Black Feature

Apple Facing One of Its Worst Leaks Since the iPhone 4

Thursday July 2, 2026 9:53 am PDT by
Apple supplier Tata Electronics recently suffered a cyberattack that resulted in thousands of confidential files being published on the dark web, and this reportedly included some photos and documents related to the upcoming iPhone 18 Pro. We have elected not to share any of the leaked photos in this story due to the illegal nature in which they were obtained, but they can easily be found...