The Hidden Truth Behind Your Google Lighthouse Score

Join Aymen Loukil as he delves into the challenges that arise in web performance when relying solely on synthetic tools and their scoring systems. Although these tools are invaluable for debugging and testing web performance, they cannot accurately represent the experience of real-life website users. Aymen will share his insights gained from a retrospective analysis of web performance measurement methodology. He will discuss his findings on how to overcome these challenges and gain a better understanding of the user experience thanks to real user monitoring data

Transcript

1. The Hidden Truth Behind Your Google Lighthouse Score! Aymen Loukil Speetals Founder https://speetals.com/
2. @LoukilAymen @SearchLDN Back to 2017, this was my #webperf workflow Audit in Lab Write user stories Implement Test in Lab
3. @LoukilAymen @SearchLDN Awesome!
4. @LoukilAymen @SearchLDN Me excited Ship it!
5. @LoukilAymen @SearchLDN We need to wait for the next CrUX dataset (in 28 days) [Every second Tuesday]
6. @LoukilAymen @SearchLDN Users faced improvement deterioration! Feb 2020 Mar 2020 73% => 70.8%
7. @LoukilAymen @SearchLDN A shot in the dark!
8. @LoukilAymen @SearchLDN
9. @LoukilAymen @SearchLDN I’ve also been part of this!
10. @LoukilAymen @SearchLDN
11. @LoukilAymen @SearchLDN Gabriela Palai - Pexels What’s wrong with Lighthouse score…?
12. @LoukilAymen @SearchLDN One LH run may or not represent one of your users
13. @LoukilAymen @SearchLDN Emulation isn’t real life..
14. @LoukilAymen @SearchLDN 50% of perfect Lighthouse score (90+) pages fail at Web Vitals Brendan Kenny @brendankenny
15. @LoukilAymen @SearchLDN With a score of 50/100, many pages passes the Web Vitals Brendan Kenny @brendankenny
16. @LoukilAymen @SearchLDN There is a blind spot!
17. @LoukilAymen @SearchLDN Are they at least talking the same metrics?
18. @LoukilAymen @SearchLDN Ultimately they don’t share as many metrics!
19. @LoukilAymen @SearchLDN Ultimately they don’t share as many metrics! Above the fold only CLS
20. @LoukilAymen @SearchLDN Ultimately they don’t share as many metrics! Above the fold only CLS Depends on conditions
21. @LoukilAymen @SearchLDN Variability issues 3 consecutive runs on the same page and on same conditions
22. @LoukilAymen @SearchLDN It is like Rock paper scissors
23. @LoukilAymen @SearchLDN You can easily trick it! Barry Pollard @tunetheweb
24. @LoukilAymen @SearchLDN My customer’s Web agency
25. @LoukilAymen @SearchLDN You can even hack it!
26. @LoukilAymen @SearchLDN Lighthouse score does not affect SEO
27. @LoukilAymen @SearchLDN Do you mainly care about your users or Lighthouse score
28. @LoukilAymen @SearchLDN So..Rely on your Users’ data, And here is how👉
29. @LoukilAymen @SearchLDN Remember my failed #webperf workflow? Audit in Lab Write user stories Implement Test in Lab https://www.vectorstock.com/ https://knowyourmeme.com/
30. @LoukilAymen @SearchLDN Audit in field Prioritize Implement Test in Lab Fast validate on users Hear your users experience, validate your effort with them Iterate User first #webperf workflow
31. Audit in the field (Hear your users experience) STEP 1
32. @LoukilAymen @SearchLDN Identify improvement points for each metric/ device
33. @LoukilAymen @SearchLDN Identify improvement points for each metric/ device Detect distribution gaps between devices
34. @LoukilAymen @SearchLDN See how your audience LCP distributes
35. @LoukilAymen @SearchLDN See how your audience distributes 75% of your users are facing a 6.1s LCP loading!!
36. @LoukilAymen @SearchLDN Compare against competition’ audience experiences
37. @LoukilAymen @SearchLDN How my geo-audience is experiencing it
38. Prioritize. (Do the right thing first) STEP 2
39. @LoukilAymen @SearchLDN Sort your top page-types per metric Domain data Page-level data
40. @LoukilAymen @SearchLDN Identify low-hanging fruits Start with this listing page template
41. Implement & Audit in lab. (Implement, test) STEP 3
42. Validate the outcomes. (Don’t wait 28 days..) STEP 4
43. @LoukilAymen @SearchLDN 34%+ Desktop CLS increase in 10 days - PDP Validated Deployed
44. @LoukilAymen @SearchLDN LCP P75th percentile chart going down! 4.2s => 2.3s
45. Thank you! Aymen Loukil @LoukilAymen https://speetals.com International SEO and Web Performance Consultant