Mozilla revealed that it was working on a Picture-in-Picture mode for the Firefox web browser back in February. Designed to play videos in a small overlay on the screen, Picture-in-Picture mode allows users of the browser to navigate between tabs and sites without interfering with the playing video using the detached video player.

The original plan was to introduce the mode in Firefox 68 but development has been delayed. Current plans aim for a release in the next stable Windows version of the Firefox web browser, Firefox 71. Firefox 71 will be released on December 3, 2019 if the schedule does not change. Linux and Mac versions of Firefox may see a release in Firefox 72 which will be released on January 7, 2020.