How I Found and Fixed 5 Critical Lighthouse Issues in a WebGL 3D Landing Page (With a Python CLI)

A few months ago, I was building a B2B landing page that embedded a 3D industrial model using . The page looked great visually. Then I ran Lighthouse. Score: 42/100. Here are the 5 issues I found -- and what made each one non-obvious: 1. Too Many Font Weights (8 requests instead of 3) Google Fonts was loading wght@300;400;500;600;700;800 -- 6 weights for Inter plus 2 for JetBrains Mono = 8 separate HTTP requests just for fonts . Each one is render-blocking. The fix: reduce to wght@400;600;700. S