Best Real-World INP Optimization Case Study How One Site Improved Core Web Vitals by 65%
Introduction In 2025, Interaction to Next Paint (INP) officially replaces First Input Delay (FID) as the key metric for measuring web responsiveness. While FID focused on a site’s first interaction, INP evaluates all user inputs, reflecting the real experience of responsiveness throughout a session. For developers and marketers, this shift is monumental. Sites can no […]

