PageSpeed Insights

Three measurable metrics Google uses as ranking signals: LCP (how fast the biggest element paints), CLS (how much the layout shifts unexpectedly), and INP (how snappy the page feels to interact with). Green across all three is the goal.

90+ is green ("Good"), 50–89 is yellow ("Needs improvement"), below 50 is red. For content sites, aim for 75+ on mobile — the score Google actually uses for ranking.

Mobile simulation assumes a mid-tier phone on a 4G connection. The same HTML takes longer to parse, layout, and paint on slower hardware. Always optimise for mobile first — it's what Google scores.

Lab = Lighthouse ran once in a synthetic environment (repeatable, testable). Field = real Chrome users over the last 28 days (what Google actually uses). If field data shows, it's the number that counts.

Each run launches a headless Chrome on Google's servers and records a full performance trace. 20–60 seconds is normal. We bump the server timeout so our side doesn't give up first.