Progressive Image Rendering
summary
Shows concrete wins and tradeoffs: uses placeholders, dominant-colour blocks and the blur-up blurry-thumb technique rendered via CSS3, canvas or SVG filters; lazy loading tied to the IntersectionObserver API with a polyfill fallback; experiments find 27x17 thumbnails and header-stripping can hit ~200‑byte payloads, WebP reduces tiny-thumb size by ~25%, and only ~7% of JPEGs are progressive so fallbacks and failure modes matter.
AI-written summary · about
chapters (9)
- 0:00Introduction
- 0:45What are images
- 1:15Why use images
- 5:10Optimization
- 7:50Lazy Loading
- 9:53Intersection of Server API
- 11:39Loading Limits
- 14:41Examples
- 23:20Summary
