#core web vitals

Google has introduced Core Web Vitals, three new metrics for measuring user experience on websites. They have also provided recommended limits for each metric and announced a new metric called IMP. The talk focuses on web performance recommendations, including optimizing HTML parsing, using the fetch priority API, and optimizing CLS. It also covers optimizing JavaScript performance, avoiding unnecessary third-party content, and optimizing rendering and DOM. These recommendations aim to improve web performance and user experience.

Images, video, and media are crucial in e-commerce to deliver the best user experience. Nike's acquisition of Artifact Studios and the launch of Nike land on Roblox demonstrate the future of e-commerce in the metaverse. Clear and zoomable images, point-based details, and video are essential for enhancing the user experience. Optimizing media delivery through modern image formats, compression, resizing, and technology can significantly improve conversion rates in e-commerce.

This Talk discusses the evolution of performance measurement tooling and the importance of performance in web development. It introduces Google Lighthouse as a tool that provides detailed information on webpage performance. The Talk emphasizes the significance of Core Web Vitals, including Largest Contentful Paint, First Input Delay, and Cumulative Layout Shift. It suggests hosting the Lighthouse environment locally and using Lighthouse CI for continuous performance measurement. The Talk also highlights the impact of Core Web Vitals on SEO and the importance of prioritizing field data over lab data.

This Talk provides an introduction to the core of Vitals and its contribution to Google search. It discusses the evolution of website performance metrics and the need to consider factors beyond the time to first byte. The concept of Core Web Vitals is introduced, consisting of three metrics: Largest Contentful Paint, First Input Delay, and Cumulative Layout Shift. The upcoming Page Experience signal, launching in May 2021, will combine Core Web Vitals with existing ranking signals. The Talk also addresses challenges in measuring performance and provides insights on layout stability and visual completeness.

Lee, a solutions architect at Vercel, introduces Core Web Vitals and their impact on SEO, highlighting the importance of web performance and sharing examples from Amazon and Walmart. He explains the metrics for Core Web Vitals, including Largest Contentful Paint, First Input Delay, and Cumulative Layout Shift. Lee discusses strategies to reduce Cumulative Layout Shift, the benefits and challenges of using npm packages in the React ecosystem, and the upcoming Next.js conference. He concludes by inviting listeners to visit his Twitter profile and expressing gratitude for their participation.