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Web Platform Baseline Status Breakdown Total Features: 1191
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Showing 2 of 2 features

2025

2 features
• December 2025
Newly Available

The event and first-input performance entries and the PerformanceEventTiming API measures the latency of user input events, such as mouse clicks or keypresses. They're used to calculate Interaction to Next Paint (INP), a common metric for perceived responsiveness.

Chrome 76
Firefox 89
Safari 26.2
Edge 79
Baseline Date: Dec 12, 2025

The largest-contentful-paint performance entry and the LargestContentfulPaint API measures the time it takes for the largest image or text to appear. Largest contentful paint (LCP) is a common metric for perceived loading times.

Chrome 77
Firefox 122
Safari 26.2
Edge 79
Baseline Date: Dec 12, 2025