Mozilla Blog

We’re making Firefox accessible and delightful for everyone

I joined Mozilla in 2017 as an accessibility engineer and soon became the tech lead for accessibility. But for years prior, I was already deeply involved w

Polaris Privacy Initiative to Accelerate User-focused Privacy Online

At Mozilla, we believe that an individuals’ privacy on the Internet cannot be treated as optional. Our Privacy Principles guide us with the design of each of our products and ...

Firefox 32-bit Linux Support to End in 2026

For many years, Mozilla has continued to provide Firefox for 32-bit Linux systems long after most other browsers and operating systems ended support. We made this choice because we care ...

Blocking Top-Level Navigations to Data URLs for Firefox 58

End users rely on the address bar of a web browser to identify what web page they are on. However, most end users are not aware of the concept of ...

The new Firefox design is here

What comes to mind when you think of Firefox? Is it our best-in-class privacy features and ad blocking capabilities? Our partnerships with Wrexham, NVIDIA

Mozilla Intends to Deprecate OpenSearch

Search Engine add-ons will be removed from AMO on December 5, 2019. To continue working, they must be converted to an extension using the WebExtensions API by December 3, 2019.

Mozilla and Epic Preview Unreal Engine 4 Running in Firefox

Today, Epic Games and Mozilla are demonstrating how the Web is continuing to evolve as a powerful platform for gaming by providing a sneak peek of Epic’s

About the future of Thunderbird

Best Firefox Add-ons of 2013

Every month, a committee of Firefox volunteers — who really, REALLY love Firefox Add-ons — puts their time and effort into finding the best new ...

Getting Superfish Out of Firefox

First things first: If you are reading this post on a recent Lenovo laptop, please click the lock icon in the URL bar, then click “More Information…”. If you see ...

Mozilla Games Technology Roadmap

In furthering the advantages and appeal of the Web as a platform for games and game technologies, Mozilla is publishing its games-focused roadmap. In short, it’s all about high-performance, plugin-free ...

Delaying Further Symantec TLS Certificate Distrust

Due to a long list of documented issues, Mozilla previously announced our intent to distrust TLS certificates issued by the Symantec Certification Authority, which is now a part of DigiCert. ...

Firefox OS Update Adds New Features, Performance Improvements

Just weeks after the first Firefox OS phones hit the market, an update is being made available adding new features, support for a number of new languages and significant performance ...

Behind the design of the fresh new Firefox coming June 1

A new Firefox is coming your way on June 1 with a fresh look designed for today’s modern life online. We pored over the browser’s user interface pixel

Nearly there

We’ve spent the past two weeks asking people around the world to think about our four refined design directions for the Mozilla brand identity. The results are in and the ...

MDN’s new design is in Beta

Change is coming to MDN. In a recent post, we talked about updates to the MDN brand, and this time we want to focus on the upcoming design changes for ...

WebExtensions in Firefox 48

We last updated you on our progress with WebExtensions when Firefox 47 landed in Developer Edition (Aurora), and today we have an update for Firefox 48, which landed in Developer ...

What does “asm.js optimizations” mean?

The Microsoft Chakra team has announced on the IE blog that asm.js optimizations are In Development . We at Mozilla are very excited for IE to join Firefox in providing predictable, top-tier performance on asm.js code and from my discussions with the Chakra team, I expect this will be the case.

Expanded extension support in Firefox for Android Nightly

Starting September 30, 2020, you can configure Firefox for Android Nightly to install extensions listed on addons.mozilla.org.

Update on Digital Rights Management and Firefox

A year ago, we announced the start of efforts to implement support for a component in Firefox that would allow content wrapped in Digital Rights Management

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 ...

Publisher Transformation with Users at the Center

*Feb. 13 update: I posted more details about Directory Tiles here.* We believe that if you put the user front and center, you can make ...