Web Performance: How Fast Are We Going Now?
summary
Year-over-year measurements show connectivity: global +4%, US +18%, mobile carriers +30–131%, browsers and JS engines keep getting faster, but page weight explodes — top 1,000 pages +44% (~+368 KB to ~1.2 MB) with images +150 KB and JavaScript +37 KB; an “other” bucket jumps 16 KB → 165 KB, driven largely by video (video up ~150%, now second-largest byte source). Best-practice scores barely budge (PageSpeed ~82→84), DNS lookups and domains per page rise, synthetic timing is noisy, and RUM shows median loads ~35% faster; adopt SpeedIndex and new rules for video, caching, and rendering.
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chapters (13)
- 0:00Start
- 5:48Performance Summary
- 7:16Average Connection Speed
- 7:50Average Mobile Connection Speed
- 8:56Performance Differences Across Browsers
- 15:54doesn't add up
- 17:58"other" resources
- 22:06text/plain
- 22:49application/octet-stream
- 35:34Load Time & Start Render Time
- 40:40Speed Index
- 42:40sneak preview
- 44:29takeaways
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