Frontend performance,
explained.
Deep dives on Core Web Vitals, performance budgets, real user monitoring, deployment impact, and modern frontend performance.
Understanding Core Web Vitals in 2025
LCP, INP, CLS, FCP, and TTFB explained. What each metric measures, what good looks like, and how to track them on real users in 2025.
How to set performance budgets that actually work
Performance budgets only work when they are enforced. Here is a proven framework for setting, enforcing, and iterating on budgets for LCP, INP, CLS, and JavaScript bundle size.
Deployment impact: the missing link in frontend performance
Most teams measure performance before and after a release manually, if at all. Here is how automatic deployment impact diffing catches regressions before users notice.
Real user monitoring vs synthetic testing
Synthetic tests are useful for development, but they do not reflect real user experience. Here is how to combine both for a complete performance picture.
INP replacing FID: what frontend teams need to know
Interaction to Next Paint replaced First Input Delay in March 2024. Here is what changed, why it matters, and how to optimize for it.
JavaScript bundle size: the hidden performance tax
Every kilobyte of JavaScript you ship has a cost. Here is how to measure, budget, and reduce your JavaScript bundle size without sacrificing functionality.
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