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Firefox 70
Firefox 70 is released today, and includes great new features such as secure password generation with Lockwise and the new Firefox Privacy Protection Report, as well as cool additions for ...
Mozilla Hacks
Mozilla Hacks is written for web developers, designers and everyone who builds for the Web. Hacks is produced by Mozilla's Developer Relations team and features hundreds of posts from Mozilla ...
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Visit hacks.mozilla.org → RSS feedOn Hacker News May 2010 – May 2026
Web & Frontend 170Software Engineering 69Tools & Productivity 44Systems & Performance 35Tech Industry & Business 31Security & Privacy 19
2
Firefox 66 to block automatically playing audible video and audio
Unsolicited volume can be a great source of distraction and frustration for users of the web. So we are making changes to how Firefox handles playing media with sound and ...
3
Firefox 64 Released
The year's last release of Firefox bundles together goodies for all, including multi-tab management in the interface, new CSS features, devtools improvements, better privacy protections, add-ons updates, and much, much ...
4
Firefox 73
Today we’ve released Firefox 73, with useful additions that include CSS and JavaScript updates, and numerous DevTools improvements. We’ve added to CSS logical properties, pushed performance forward in the Console ...
5
MDN Plus
Today, we are launching MDN Plus, our first step to providing a personalized and more powerful experience.
6
Technical Details on the Recent Firefox Add-On Outage
Recently, Firefox had an incident in which most add-ons stopped working. This was due to an error on our end: we let one of the certificates used to sign add-ons ...
7
Firefox 79
Firefox 79 offers a new Promise method, more secure target=_blank links, logical assignment operators, tooling improvements for better JavaScript debugging, and many other updates of interest to web developers. In ...
8
Firefox moving to 4 week releases
Building and releasing a browser is complicated and involves many players. To optimize the process, and make it more reliable for all users, over the years we’ve developed a phased ...
9
Firefox OS devices officially released
Almost two years ago, we announced Boot to Gecko (B2G) here on Mozilla Hacks. We discussed the aims of the project and the work we were planning to do. Today, ...
10
Retrospective and technical details on the recent Firefox outage
On January 13th 2022, Firefox became unusable for close to two hours for users worldwide. This post highlights the complex series of events and circumstances that, together, triggered a bug deep in the networking code of Firefox.
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Pre-orders start today for Flame, the Firefox OS developer phone
Update 2014-07-15: The pre-order period has ended and the Flame is now available as a standard order, with shipping in 7-10 days. The Firefox OS Flame reference device that we ...
12
The Mozilla Developer Network has a New Face
Last summer the Mozilla Developer Network (MDN) underwent a massive platform change, moving from a hosted third-party solution to our own custom Django application code-named Kuma. That move laid the ...
13
Firefox 75: Ambitions for April
Firefox 75 is chock full of handy new dev tooling: instant evaluation in the web console, event breakpoints for WebSockets, and more. New web platform features include HTML lazy loading ...
14
How to Spread The Word About Your Code
You spent an entire weekend building a library, jQuery plugin, build tool, or other great piece of code you wanted to share far and wide, but after some tweets and ...
15
Firefox OS Apps run on Android
At Mozilla we believe that apps and browsing are best viewed as cooperative and symbiotic, each better when working together. We are working to strengthen that relationship by building an ...
16
Firefox 71
Please welcome Firefox 71 to the stage! This time around, we have a plethora of new developer tools features including the web socket message inspector, console multi-line editor mode, log ...
17
Safari is adopting an extensions API similar to Firefox’s WebExtensions
Safari is adopting a web-based API for browser extensions similar to Firefox’s WebExtensions API making it easy to build once and port to multiple browsers. Developers
18
AV1 and the Video Wars of 2027
This post imagines a dystopian future where only the rich can stream video to their homes, and the democratizing forces of the internet have crumbled under corruption and greed. The ...
19
Version 100 in Chrome and Firefox
Chrome and Firefox will reach version 100 in a couple of months. Let's work together on fixing User Agent detection issues.
20
Firefox 56: Last Stop Before Quantum
Here at Mozilla, we’re extremely excited about next month’s release of Firefox Quantum, with massive speed improvements, a brand new UI, and many Developer Tools upgrades -- available now in ...
21
Firefox 49 fixes sites designed with WebKit in mind, and more
Several recent articles on the Hacks blog explain why web developers should care about cross-browser compatibility and how great web developers achieve it. Web developers have a critical role in ...
22
Firefox OS 2.5 Developer Preview, an Experimental Android App
Today we have made Firefox OS 2.5 available worldwide. We are also making an early, experimental build of the OS -- Firefox OS 2.5 Developer Preview -- available for developers ...
23
Firefox 72 – our first song of 2020
2020 is upon us, folks. We'd like to wish everyone reading this a happy new year, wherever you are. As you take your first steps of the new year, figuring out what your next move is, you may find it comforting to know that there's a new Firefox release to try out! Version 72 to be exact.
24
Lots to See in Firefox 93
Firefox 93 comes with lots of lovely updates including AVIF image format support, filling of XFA-based forms in its PDF viewer and protection.
25
Simplifying Firefox Release Channels
Streamlining our release process and quickly getting stable new features to users and developers is a priority for Firefox. Taking a close critical look at our release channels, it became ...
26
So You Wanna Build a Crowdfunding Site
The tools to get funded by the crowd should belong to the crowd. That's why I want to show you how to roll your own crowdfunding site, in less than ...
27
Add-Ons Outage Post-Mortem Result
We've been conducting an ongoing post-mortem on the add-ons outage that occurred earlier this year. There was a lot more digging to do than we expected. In addition to this ...
28
Interop 2022
Interop 2022 is a cross-browser initiative to find and address the most important interoperability pain points on the web platform.
29
Building A Paid App For Firefox OS
At first glance the Firefox Marketplace for Firefox OS may look similar to the Apple Store or Google Play Store but there is a key difference: it does not lock ...
30
Firefox 71: A year-end arrival
Please welcome Firefox 71 to the stage! This time around, we have a plethora of new developer tools features including the web socket message inspector, console multi-line editor mode, log ...