How I Fixed a 42/100 Lighthouse Score on a B2B 3D WebGL Landing Page (and Open-Sourced the Fix)

A few weeks ago, I was building a B2B landing page that embedded an industrial 3D model using . The page looked fantastic. Then I ran Lighthouse. Score: 42/100. Here are the silent killers I found - and what made them non-obvious: 1. The Font Weight Trap (8 requests instead of 3) Google Fonts was loading wght@300;400;500;600;700;800 . That's 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 exactly the weight