Speed at Scale: Web Performance Tips and Tricks from the Trenches
summary
Lightweight, actionable fixes and measurable wins: add LightWallet budgets to Lighthouse to catch PR regressions; Jabong cuts app size 80% and its PWA reaches 18 KB TTI with an 82% TTI improvement; Chrome’s native lazy-loading drops image bytes from 2.2 MB to 548 KB and brands see ~76% fewer initial image bytes; Telegraph defers JS to cut TTI by 6s; TUI reduces load time 71% and bounce 31%; Brotli trims JS 15% and latency 37%; eBay prefetching saves ~759 ms.
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chapters (13)
- 0:00Introduction
- 0:40User Experience
- 2:04Performance Budgeting
- 6:17Performance Budget Calculator
- 13:59Responsive Images
- 17:16JavaScript
- 22:05Alternatives to removing expensive libraries
- 23:56Updating dependencies
- 30:33Display text
- 34:30Critical CSS
- 36:45Brightly
- 37:47Adaptive Serving
- 40:18Outro
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