Media
5 items
Description
Real-session performance observer. Reads page timing locally. PerfLens watches the pages you actually browse and tells you how they perform — no synthetic run, no lab throttling, no account. - Reads real user timing from the live session: Core Web Vitals, long tasks, layout shifts, and resource weight. - A DevTools panel for the detail and a popup for the score at a glance. - Explains every finding in plain language, and shows exactly how the score was computed. - Detects the framework and build setup of the page so the advice fits the stack.
rating_count is the Chrome Web Store ratings count, not a written-review count.