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Mujeres en SEO Summit 2026 - Greatest Disaster ...

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Avatar for Estela Franco Estela Franco
June 17, 2026
Programming
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Mujeres en SEO Summit 2026 - Greatest Disaster Hits en Web Performance

Avatar for Estela Franco

Estela Franco

June 17, 2026

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Transcript

  1. None

  2. Meet your Tour Manager Estela Franco Technical Architect, Web Performance

    guaca.bsky.social toot.cafe/@guaca
  3. None
  4. None
  5. None
  6. None
  7. None

  8. developer.chrome.com/docs/crux Big Brother is Watching you!

  9. httparchive.org

  10. httparchive.org

  11. None

  12. almanac.httparchive.org

  13. almanac.httparchive.org 16.2M websites 244TB processed

  14. None
  15. None
  16. None
  17. None

  18. uncompressed HTML 1.3M mobile websites

  19. uncompressed JavaScript 29.5M mobile resources

  20. None

  21. Uncompressed resources

  22. None
  23. None

  24. <img src="hero-image.webp" alt="My cool hero image" />

  25. <img src="hero-image.webp" alt="My cool hero image" loading="lazy" />

  26. ✅ ✅ ✅ ✅

  27. None

  28. <img src="hero-image.jpg" alt="My cool hero image" />

  29. <img src="placeholder.jpg" alt="My cool hero image" data-src="hero-image.jpg" class="lazy" />

  30. None

  31. calendar.perfplanet.com/2022/lazy-loading-lcp-images-why-does-this-anti-pattern-happen/

  32. 2022 18% almanac.httparchive.org/en/2022/performance

  33. almanac.httparchive.org/en/2025/performance 2025 17%

  34. None

  35. Lazy-loading the LCP image

  36. None
  37. None

  38. web.dev/articles/preload-scanner

  39. <link rel="preload" as="image" href="image.jpg" >

  40. <div style=" background-image:url(hero-image.webp)" />

  41. None

  42. ✅ ✅ ✅ ✅

  43. Missing preloads for critical resources undiscoverable by the preload scanner

  44. None

  45. everything everywhere all at once

  46. None
  47. None
  48. None

  49. Excessive or unnecessary preloading

  50. None
  51. None
  52. None

  53. <script type="speculationrules"> { "prerender": [{ "where": { "selector_matches": ".prerender" }

    }], "prefetch": [{ "where": { "selector_matches": ".prefetch" } }] } </script> developer.chrome.com/docs/web-platform/implementing-speculation-rules

  54. HTTP header: Speculation-Rules: "/speculationrules.json" developer.chrome.com/docs/web-platform/implementing-speculation-rulesa

  55. ✅ ✅ ❌ ❌

  56. performance.shopify.com/blogs/blog/speculation-rules-at-shopify

  57. performance.shopify.com/blogs/blog/speculation-rules-at-shopify

  58. None

  59. Not leveraging Speculation Rules

  60. None
  61. None

  62. 1. Uncompressed resources 2. Lazy-loading the LCP image 3. Missing

    preloads for critical resources undiscoverable by the preload scanner 4. Excessive or unnecessary preloading BONUS TRACK 5. Not leveraging Speculation Rules

  63. planetaberilis.com guaca.bsky.social toot.cafe/@guaca 20% DTO con código “MUJERESENSEO”