See what landed recently in Firefox Nightly!

Starting with Firefox 129, Firefox Nightly blocks third-party cookie access with Enhanced Tracking Protection's Strict mode and also in Private Browsing.

Starting with Firefox 129, Firefox Nightly will automatically try to use a secure HTTPS connection whenever possible when loading a page. This behavior is known as "HTTPS-First", or "HTTPS Upgrades", and has been the default in Firefox's private browsing mode since Firefox 91. Here is a blog post from when this feature was introduced in Private Browsing.

Starting with Firefox 130, we’re launching a voting feature for the stories and articles on the New Tab page. You can vote up or down by hovering over the card, helping to improve future recommendations.

Firefox now blocks third-party cookie access with Enhanced Tracking Protection's Strict mode and also in Private Browsing.

If we have the server time, we adjust the "expire" attribute value by adding the delta between the server and the local times. If the current time is set in the future, we consider valid cookies that are not expired for the server.

Deprecated HLS playlist support in Firefox for Android. Extended testing showed no adverse impact as newer playback technologies have been widely adopted by websites.

As a follow-up to our work to upgrade mixed content starting Firefox 127, we will now also block HTTP-favicons if they can not be received over HTTPS instead.

Starting with Firefox 131, support for the non-mandatory options argument to getBBox will get the bounding box of the element, including its stroke (e.g. element.getBBox({"stroke": true})). (Learn more)

The requestVideoFrameCallback() method is now available on the HTMLVideoElement interface. This method enables developers to perform efficient operations on each video frame.