Core Web Vitals

Core Web Vitals & INP Speed Profiler

Diagnose sub-millisecond Interaction to Next Paint (INP), Largest Contentful Paint (LCP), and Cumulative Layout Shift before Google drops your organic rankings.

Test Real-World User Experience Metrics

Evaluates Time to First Byte (TTFB), long JavaScript main-thread tasks, and layout stability.

Interaction to Next Paint (INP)

Monitors how quickly the page responds to user clicks, taps, and keystrokes without UI freezes.

Largest Contentful Paint (LCP)

Measures render timing of primary viewport assets (hero images, video covers, and block headlines).

Cumulative Layout Shift (CLS)

Identifies elements that shift unexpectedly without explicit width/height dimensions or font swaps.