After Firefox 41 stable, Firefox 42 beta is now available for Windows, Mac and Linux for testing with tracking protection in Private browsing mode, audio indicators and one-click muting, and Login manager improvements.
What’s new in Firefox 42
Tracking Protection in Private browsing mode
Mozilla has enabled tracking protection in private browsing mode, which you can notice when you open a new private window. We’ve already told you about the new design they’ve implemented earlier, you’ll see the same one in this first beta version also. And now for users, there is a tour available to see how the tracking protection works in Firefox browser.
Learn how tracking protection works through interactive tour
Click on ‘see how this works’ and follow the steps appear on the screen after that to understand how TP functions and blocks tracking elements in a page. Visit this FAQ page for more details.
You can turn off/on the tracking protection in PBM page, or visit Options> Settings > Privacy, under tracking uncheck ‘Use Tracking Protection in Private Windows’.
Note: Mozilla has already said TP in PBM as experimental, we’re unsure about the availability of this feature in v42 release channel.
Audio indicator and one-click muting for sound playing tabs
Finally Firefox now shows an indicator for audio playing tabs (supports Adobe flash content from version 19, which is the current one) and lets you mute them with a single click, you can also use the shortcut Ctrl+M for muting a tab on Windows.
So for both HTML5 and flash videos, you’ll notice audio indicators in Firefox tabs.
Login Manager improvements:
- Improved heuristics to save usernames and passwords
- Edit and show all logins in line, Copy/Paste usernames/passwords from the Context menu
- Migration imports your passwords to Firefox from Windows Chrome and IE; import anytime from the Login Manager
- Private Browsing with Tracking Protection blocks certain Web elements that could be used to record your behavior across sites
- GTK3 integration (GNU/Linux only)
- Indicator added to tabs that play audio with one-click muting (Adobe Flash supported since version 19)
- Control Center that contains site security and privacy controls
- Login Manager improvements:
Improved heuristics to save usernames and passwords
Edit and show all logins in line, Copy/Paste usernames/passwords from the Context menu
Migration imports your passwords to Firefox from Windows Chrome and IE; import anytime from the Login Manager
- WebRTC improvements:
Preferences for controlling ICE candidate generation and IP exposure
Hooks for extensions to allow/deny createOffer/Answer
Improved ability for applications to monitor and control which devices are used in getUserMedia
- Improved performance on interactive websites that trigger a lot of restyles
- Implemented ES6 Reflect
- Ship Push messaging with disabled web notifications from ServiceWorkers
- Support ImageBitmap and createImageBitmap()
- Remote website debugging over WiFi (no USB cable or ADB needed)
- Asynchronous call stacks now allow web developers to follow the code flow through setTimeout, DOM event handlers, and Promise handlers.
- Configurable Firefox OS Simulator in WebIDE, to simulate reference devices like phones, tablets, even TVs
- CSS filter presets in the Inspector
- Ability to save filter presets inside CSS Filter Tooltip
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