The Web Real-Time Communications Working Group has published a First Public Working Draft of Viewport Capture. This document defines how a browser viewport can be used as the source of a media stream using getViewportMedia, an extension to the Screen Capture API [ screen-capture ].

The Web Performance Working Group has published the following two First Public Working Drafts:

• Event Timing API: This document defines an API that provides web page authors with insights into the latency of certain events triggered by user interactions.
• Largest Contentful Paint: This document defines an API that enables monitoring the largest paint an element triggered on screen.