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2015 State of the Union: Mobile Web Performance


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There are, of course, many more than 23 interesting stats about mobile usage and performance (these slides are based on just a one-hour talk, after all), but if you’re interested in mobile, this is a good start.

See a recording of this talk:

Published in: Mobile
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2015 State of the Union: Mobile Web Performance

  1. 1. 2015 State of the Union Mobile Web Performance
  2. 2. @tameverts
  3. 3. We have a love/hate relationship with mobile
  4. 4. 7% of US adults rely on their smartphones Source: Pew Research
  5. 5. Almost half of US adults “can’t live without” their smartphone Source: Pew Research
  6. 6. 39% of mobile users are unhappy Source: Akamai
  7. 7. 57% have experienced problems Source: Akamai
  8. 8. 3 out of 4 consider mobile slower than desktop Source: Akamai
  9. 9. 46% will not return to a site that performs poorly Source: Akamai
  10. 10. Only about 1 out of 10 prefer to shop via mobile Source: Akamai
  11. 11. So why bother with mobile?
  12. 12. Because mobile is growing fast
  13. 13. Source: Ericsson
  14. 14. Source: Ericsson 4 out of 5 people worldwide will own a smartphone
  15. 15. Because mobile users are more engaged
  16. 16. Source: Akamai Product searches (weekly)
  17. 17. Because mobile users shop more
  18. 18. Source: Akamai Consumers who make at least one purchase per week
  19. 19. What are mobile shoppers buying? Source: Criteo
  20. 20. Because mobile users spend more
  21. 21. Source: Akamai Annual spending per device
  22. 22. The US is not the global benchmark Text is good Source: Criteo
  23. 23. The future of mobile commerce? Source: Criteo
  24. 24. How fast do mobile users expect pages to be?
  25. 25. Just a 1-second delay hurts mobile metrics Source: SOASTA
  26. 26. Source: SOASTA Just a 1-second delay hurts mobile metrics
  27. 27. What’s wrong with mobile performance?
  28. 28. Page bloat Number of resources Scripts Custom fonts Redirects HTTPS
  29. 29. Mobile page bloat Source: Mobile HTTP Archive
  30. 30. The average page has grown by 3X since 2011 Source: Mobile HTTP Archive
  31. 31. Lara Hogan, Web performance is user experience
  32. 32. Images account for 63% of page weight Source: Mobile HTTP Archive
  33. 33. Compress Reformat Use WebP Sprite Defer Preload Learn more: High Performance Images (Guy Podjarny)
  34. 34. 1 out of 5 pages contains 100+ resources Source: Mobile HTTP Archive
  35. 35. Fix back end Leverage browser cache Consolidate resources Use a CDN
  36. 36. JavaScript usage continues to rise Source: Mobile HTTP Archive
  37. 37. Know when to say “no” Use async scripts when possible Watch this talk…
  38. 38. 48% of pages served to mobile use custom fonts Source: Mobile HTTP Archive
  39. 39. Custom fonts can require huge amounts of CSS, heavy JS, or external hosting
  40. 40. Use only when necessary Better yet, disable them for mobile Read: Webfont optimization (Ilya Grigorik)
  41. 41. 1 out of 5 pages contains 5+ redirects Source: Mobile HTTP Archive
  42. 42. Read: How to minimize redirects (Patrick Sexton) URL redirect fails (Brad Frost)
  43. 43. 16% of pages contain HTTPS requests Source: Mobile HTTP Archive
  44. 44. Verify certificate configuration Enable keep-alives Consider HTTP Strict Transport Security header Read: HTTPS and Web Performance (Dean Hume)
  45. 45. Page bloat has a cost
  46. 46. Many smartphone owners exceed their data cap Source: Pew Research
  47. 47. Low- and middle-earners more likely to max data Source: Pew Research
  48. 48. Is mobile an essential service?
  49. 49. Some companies now charge extra for paper billing Many companies now only post jobs online Government services moving online, physical offices shutting down Financial services for seniors and shut-ins High school and university students need to access online research and communications tools
  50. 50. 7% of US adults rely on their smartphones Source: Pew Research
  51. 51. Takeaways
  52. 52. People need mobile Most mobile users are dissatisfied #1 cause of slowdowns: Page size #2 cause of slowdowns: Page complexity Slowdowns hurt your visitors Slowdowns hurt you You can make things better
  53. 53. mPulse Pro for 3 months for free