Mozilla Blog

Australis is landing in Firefox Nightly

Australis in Firefox on Linux, Mac, and Windows A very exciting set of changes is landing in Firefox Nightly. We’ve been calling the project Australis, but, simply, it’s the next ...

Privacy Analysis of FLoC

In a previous post, I wrote about a new set of technologies “Privacy Preserving Advertising”, which are intended to allow for advertising without compr

Extensions in Firefox 58

With the release of Firefox Quantum on November 14, 2017, we officially entered a WebExtensions-only world for add-on development. While that event was certainly the news of the day, Firefox ...

Firefox: Performance in Progress

In the last six months the Firefox performance team has implemented changes to improve startup, responsiveness, security (Fission), and web standards. Startup and perceived startup Doug Thayer and Emma Malysz ...

Calling for Antitrust Reform

Mozilla supports the American Innovation and Choice Online Act (AICOA). The time for change is now. It’s time for governments to address the reality

Mozilla Fights On For Net Neutrality

Mozilla took the next step today in the fight to defend the web and consumers from the FCC’s attack on an open internet. Together with other petitioners,

Firefox’s Test Pilot Program Returns

Like a cat, the Test Pilot program has had many lives. It originally started as an Add-on before we relaunched it three years ago. Then in January, we anno

The Future of Developing Firefox Add-ons

Today we are announcing some major upcoming changes to Firefox add-ons. Our add-on ecosystem has evolved through incremental, organic growth over the years, but there are some modernizations to Firefox ...

Mozilla and Partners Prepare to Launch First Firefox OS Smartphones

First Open Web Devices Powered by Firefox OS Make Smartphones More Accessible; Regional announcements coming soon Mountain View, Calif. – July 1, 2013 – Mozilla, the mission-based organization dedicated to ...

Mozilla Awards $385k to Open Source Projects

For many years people with visual impairments and the legally blind have paid a steep price to access the Web on Windows-based computers. The market-leadin

Firefox for Android will soon support extensions

During the release cycle of Firefox 120, we’ll begin to see the emergence of dozens of new, openly available extensions on Firefox for Android on addons.mozilla.org (AMO). We’re taking a ...

When a video codec wins an Emmy

It’s not every day a video codec wins an Emmy. But yesterday, the Television Academy honored the AV1 specification with a Technology & Engineering Em

How to speed up the Rust compiler in 2018

18 months ago I wrote about some work I did to speed up the Rust compiler (rustc). I’ve recently taken this work up again. Also, in the meantime rustc’s build system has been replaced and its benchmark suite has been overhauled. So it’s a good time for an update.

EU copyright reform: the facts

Ahead of the crucial EU copyright vote on 12 Sept., we set the facts straight and explain exactly what the new rules will mean for the internet in Europe.

Mozilla Presses Pause on Facebook Advertising

Mozilla is pressing pause on our Facebook advertising. Facebook knows a great deal about their two billion users — perhaps more intimate information than

Mozilla’s Manifest v3 FAQ

Developers have asked what Google's proposed changes to their extensions API, known as Manifest v3, mean for Mozilla. Here are some frequently asked questions.

Celebrating 10 Years of Firefox

10 years ago we built Firefox to give you a choice. The Web was a monoculture and the only way in was through the company that controlled your operating sy

Firefox Private Browsing vs. Chrome Incognito: Which Is Faster?

With the launch of Firefox Quantum, Mozilla decided to team up with Disconnect Inc. to compare page load times between desktop versions of Chrome’s Incog

Firefox 90 supports Fetch Metadata Request Headers

We are pleased to announce that Firefox 90 will support Fetch Metadata Request Headers which allows web applications to protect themselves and their users against various cross-origin threats like ...

ECMAScript 2016+ in Firefox

After the release of ECMAScript 2015, a.k.a. ES6, the ECMAScript Language Specification is evolving rapidly: it's getting many new features that will help developing web ...

Things about the new Firefox browser for Android

What the heck happened with .org?

If you are following the tech news, you might have seen the announcement that ICANN withheld consent for the change of control of the Public Interest Regis

Mozilla and NSF offer $2M prize to decentralize the web

We’re fueling a healthy Internet by supporting big ideas that keep the web accessible, decentralized and resilient. What will you build? Mozilla and t

64-bit Firefox is the new default on 64-bit Windows

Users on 64-bit Windows who download Firefox can get our 64-bit version by default. That means you get a more secure version of Firefox, one that also crashes a whole lot less . How much less? In our tests so far, 64-bit Firefox reduced crashes by 39% on machines with 4GB of RAM or more.

Firefox Picture-in-Picture

Got things to do and things to watch? Do both using Picture-in-Picture in Firefox. It lets you pop a video out of its webpage and pin it to your screen so you can keep watching while you're on other pages, tabs and apps.

Mozilla Raises Concerns Over Facebook’s Lack of Transparency

Today Denelle Dixon, Mozilla’s Chief Operating Officer, sent a letter to the European Commission surfacing concerns about the lack of publicly available

Firefox Nightly Gets New Baseline JIT Compiler

This wednesday we landed the baseline compiler on Firefox nightly. After six months of work from start to finish, we are finally able to merge ...

Firefox 41 will use less memory when running AdBlock Plus

Last year I wrote about AdBlock Plus’s effect on Firefox’s memory usage . The most important part was the following.

How to speed up the Rust compiler in 2020

I last wrote in December 2019 about my work on speeding up the Rust compiler. Time for another update.

Latest Mozilla VPN features

It’s been less than a year since we launched Mozilla VPN, our fast and easy-to-use Virtual Private Network service brought to you by a trusted name in on