~/talk

display: green; applying the web sustainability guidelines

Talkat CSS Day 2025 · 2025-06-05..06-06· [web-performance]

The talk gives concrete levers: adopt the W3C Web Sustainability Guidelines (6 principles, 92 guidelines, 256 success criteria), measure with websitecarbon.com and CO2.js, and pick green hosts (Green Web Foundation lists 329 verified providers). Expect real numbers: median page size grows from 467K to 2,678K, iPhone 14 Pro has ~81% manufacturing emissions, and researchers estimate AI already consumes ~11–20% of data‑center power. Practical fixes include shaving kilobytes, removing unused JS, offering low‑carbon site versions and carbon budgets.

AI-written summary · about

  1. 0:00Introduction
  2. 2:04Web sustainability matters now
  3. 5:33W3C sustainability guidelines
  4. 9:49Five areas to reduce emissions
  5. 10:10Minimize page sizes
  6. 15:05Optimize images and videos
  7. 16:31Reduce JavaScript bloat
  8. 19:21Assign sustainability roles
  9. 20:48Use platform features over libraries
  10. 21:51Support older devices
  11. 24:37Choose green hosting
  12. 27:47Carbon intensity and grid mix
  13. 28:48Serve low-carbon versions
  14. 30:12Avoid high-energy tech
  15. 36:51Offer green alternatives
  16. 38:59Optimize CSS
  17. 42:53Summary and call to action
  18. 43:56Q&A older devices
  19. 46:24Q&A reducing analytics JS
  20. 47:48Q&A regulation and legislation
  21. 48:51Q&A nuclear power plants
  22. 49:53Q&A user choice and media queries
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