Firefox Nightly
Release Notes

Starting with Firefox 115, Nightly supports a new “Copy Link Without Site Tracking” context menu action which prevents disclosure of identifying or sensitive information by removing superfluous query and tracking parameters from the copied links.

Firefox has added a new dom.event.contextmenu.shift_suppresses_event preference allowing users to disable Firefox forcing the context menu to appear when pressing shift+right-click on a webpage as it can sometimes cause undesirable outcomes on certain sites.

macOS users can now control the tabability of controls and links via about:preferences

Starting with Firefox 117, recently closed tabs now persist between sessions for Nightly users that don't have automatic session restore enabled. Manually restoring a previous session will continue to reopen any previously open tabs or windows.

Firefox for Android now supports pasting images into contenteditable & designMode elements. Previously, only plain text and HTML was supported.

Starting with Firefox 117, Nightly builds now include extended region support for credit card autofill for the AT, BE, ES, IT, and PL locales.

Starting with Firefox 117, Nightly builds now support adding images when editing PDFs in addition to adding text and drawing.

Automated translation of web content is now available to Firefox users! Unlike cloud-based alternatives, translation is done locally in Firefox, so that the text being translated does not leave your machine.

Firefox does not show a screen sharing indicator on Wayland any more. It never worked as well as on other platforms and desktop environments typically provide sharing indicators already.

Starting with Firefox 116, we are enabling for nightly users a prototype Federated Credential Management implementation, a Web Platform API that allows users to login to websites with their federated accounts in a privacy preserving manner.

Web compatibility inspection has been enhanced with our new CSS compatibility tooltip in the Developer Tools Inspector. An icon is now displayed next to properties that could lead to web compatibility issues. When hovered, the tooltip indicates which browsers are not supported and displays a link to the MDN page for the property so the user can learn more about it.

Starting with Firefox 117, partial support for the custom highlight API is now available in Nightly builds, allowing web developers to give ranges an appearance.

ReadableStream.from is now supported, allowing creation of a ReadableStream from an (async) iterable.

Support for improved CSS nesting is now enabled by default.

Firefox now supports RTCRtpScriptTransform

Firefox now supports the CSS properties math-style and math-depth and the font-size: math value.