Firefox 87 trims HTTP Referrers by default to protect user privacy – Mozilla Security Blog
Firefox 87 trims HTTP Referrers by default to protect user privacy We are pleased to announce that Firefox 87 will introduce a stricter, more privacy-preserving default Referrer Policy. From now on, by default, Firefox will trim path and query string information from referrer headers to prevent sites from accidentally leaking sensitive user data. Referrer headers and Referrer Policy Browsers send
Advantages of WebExtensions for Developers – Mozilla Add-ons Community Blog
First, a Little Backstory Presently, Firefox supports two main kinds of add-ons. First were XUL or XPCOM add-ons, which interface directly with the browser’s internals. They are fabulously powerful, as powerful as the browser itself. However, with that power comes security risk and the likelihood that extensions will break as the browser changes. The Add-on SDK was introduced to provide a stable a
A new colour picker on Firefox for Android – Firefox UX
Choosing colours is always a fun part of any work that you do. You could be picking a single colour for a font family, or multiple colours for a site wide navigation bar, but the right colour can change a lot about the final outcome of whatever it is that you’re working on. Our task was to design a colour picker that would be used on Firefox for Android and triggered through the HTML5 property, <
Introducing html2dom, an alternative to setting innerHTML – Mozilla Security Blog
Introducing html2dom, an alternative to setting innerHTML Having spent significant time to review the source code of some Firefox OS core apps, I noticed that a lot of developers like to use innerHTML (or insertAdjacentHTML). It is indeed a useful API to insert HTML from a given string without hand-crafting objects for each and every node you want to insert into the DOM. The dilemma begins however
Debunking A Misconception About Firefox Releases – Nicholas Nethercote
There is a common misconception that every time a new release of Firefox comes out Mozilla claims “this is the one that fixes the memory consumption problems”. I see this misconception in action all the time. The Misconception in Action Here are some recent examples. Reddit example 1: NEXT VERSION OF FIREFOX IMPROVES MEMORY USAGE Holy crap!!! Oh wait, I feel like I’ve heard this before. Oh yea, w
Reset Your Firefox
Remember when a do-over was acceptable? You got to start with a clean slate and try again. A do-over would come in handy in many real-world situations. Take Web browsing, for example. Over time, you acquire plugins that you may or may not have willingly downloaded, toolbars you don’t remember installing and more. These can slow down your browsing, cause annoying crashes and just make a big old mes
Using Javascript ( *.jsm ) modules in the SDK
The ability of developers using the SDK to get chrome authority and access xpcom services is a key feature. The SDK was designed from the start with the assumption that some developers will always need access to the underlying Mozilla platform. While xpcom is the main way to access low level apis, a lot of functionality in Firefox is instead implemented as JavaScript Modules, and can be used in yo
SpiderMonkey is on a diet – Nicholas Nethercote
One thing I’ve learnt while working for Mozilla is that a web browser can be characterized as a JavaScript execution environment that happens to have some multimedia capabilities. In particular, if you look at Firefox’s about:memory page, the JS engine is very often the component responsible for consuming the most memory. Consider the following snapshot from about:memory of the memory used by a s
Blocking the Skype Toolbar in Firefox
The Skype Toolbar for Firefox is an extension that detects phone numbers in web pages, and re-renders them as a clickable button that can be used to dial the number using the Skype desktop application. This extension is bundled with the Skype application, and is installed into Firefox by default when Skype is installed or, in some circumstances, updated. As a result, a large number of Firefox user
Firefox 4 Beta With Faster Graphics and New Audio Capabilities for the Web | The Mozilla Blog
Firefox 4 Beta With Faster Graphics and New Audio Capabilities for the Web The latest update to Firefox 4 Beta brings super fast graphics and incredible new audio capabilities to the Web. Firefox 4 Beta now leverages hardware acceleration to improve graphics performance for Windows users and also allows, for the first time, the visualization of audio data within the browser. If you haven’t already
Add-on security vulnerability announcement – Mozilla Add-ons Community Blog
One malicious add-on and another add-on with a serious security vulnerability were discovered recently on the Mozilla Add-ons site. Both issues have been dealt with, and the details are described below. Mozilla Sniffer Issue An add-on called “Mozilla Sniffer” was uploaded on June 6th to addons.mozilla.org. It was discovered that this add-on contains code that intercepts login data submitted to any
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Add-on Debugger now in Firefox Nightly – Mozilla Add-ons Community Blog
Add-on Compatibility for Firefox 25 – Mozilla Add-ons Community Blog
Introducing the Add-on Guidelines
An Improved Experience for New Users of Firefox