Observing Core Web Vitals with OpenTelemetry: Part Two

Core Web Vitals (CWV) are essential metrics used by Google to evaluate the quality of user experience in browser web applications, focusing on loading performance, interactivity, and visual stability, with specific indicators like Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), and Interaction to Next Paint (INP). The document highlights recent advancements such as the replacement of First Input Delay (FID) with INP for a more accurate depiction of user interaction over time. It also discusses how to send CWV data to Honeycomb using OpenTelemetry, offering step-by-step guidance on setting up auto-instrumentation in the browser. By utilizing Honeycomb’s OpenTelemetry wrapper and tools like BubbleUp, developers can efficiently trace and debug CWV issues, enhancing their ability to optimize user experiences on web pages by identifying and resolving anomalies.