Guides

First Input Delay (FID) vs. Interaction to Next Paint (INP)

Learn about the differences between FID and INP and how to optimize your website's INP score.

A/B Testing on Vercel

Learn best practices for A/B testing on Vercel

Monitor Frontend Performance with DebugBear and Vercel

Automatically test each Vercel deployment and report performance changes to GitHub.

Monitor Performance with Calibre and Vercel

Receive performance reports directly in your GitHub Pull Requests, following a Vercel deployment.