CSS and the Critical Path
summary
Claims that the site consistently paints core content within 1000ms by inlining a tiny critical stylesheet and deferring everything else. Implementation details include inline ≤14KB of critical CSS to fit one TCP slow‑start round trip, store styles in localStorage with an MD5 key and fallback to link tags, and a CI grunt task that alerts when the critical head exceeds budgets. Measured result is a roughly 500–600ms shave from start‑render, with plans to complement this via server push and service workers.
AI-written summary · about
chapters (5)
- 0:00Start
- 4:47Maslow's hierarchy of user needs
- 5:19Time & user perception
- 13:31What is your critical CSS?
- 26:11Static assets
related talks
28mCSS and the Critical Path
27mSpeed Up! Critical CSS to the Rescue
38mCSS and the first meaningful paint
47mFaCSSt—CSS and Performance
30mHigh Performance in the Critical Rendering Path
29mHigh Performance in the Critical Rendering Path
32mStay Away From My Path!
01h 04mFrom Zero to Hero - Web Performance