Package-level declarations

The LargestContentfulPaint interface provides timing information about the largest image or text paint before user input on a web page.

The PerformanceEventTiming interface of the Event Timing API provides insights into the latency of certain event types triggered by user interaction.

The PerformanceNavigationTiming interface provides methods and properties to store and retrieve metrics regarding the browser's document navigation events. For example, this interface can be used to determine how much time it takes to load or unload a document.

The PerformancePaintTiming interface provides timing information about "paint" (also called "render") operations during web page construction. "Paint" refers to conversion of the render tree to on-screen pixels.