Lighthouse is great. I use it, and I still think it is one of the most useful performance tools available to web developers. But I wanted something closer to the way I actually debug and ship web products, so I built PerfLens . PerfLens is a browser-first performance auditing extension that gives you live Core Web Vitals, Lighthouse-style scoring, resource diagnostics, root cause summaries, performance history, and launch evidence directly inside your browser workflow. Install it here: https://chromewebstore.google.com/detail/perflens/gkogamlpcnneeficmcdcnnnhobnbebdc Why I Built It A Lighthouse report is a strong snapshot, but performance work rarely ends with one snapshot. During real development, I usually want to know: What is slowing this page down right now? Which resources are heavy? Are my Core Web Vitals healthy? What should I fix first? PerfLens is built for that loop. What It Includes PerfLens currently supports: Core Web Vitals: LCP, FID, CLS, INP, FCP, and TTFB. 0-100 performance scoring.…