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What your Google Lighthouse score hides from yo...

What your Google Lighthouse score hides from you - BrightonSEO

In this BrightonSEO talk, Aymen will tell us about the challenges he encounters in web performance when we rely heavily on synthetic tools and their scoring systems. These tools are great for debugging and testing web performance but Lighthouse score doesn't represent your website users' real life. Join him on his retrospective on web performance measurement methodology. He will share his findings on how to fix these challenges and better understand users' experience thanks to his workflow and the Real User Monitoring tool (Speetals) he built.

You can watch this talk recording for free by subscribing to BrightonSEO live event: https://april2023.brightonseo.com/talks/what-your-google-lighthouse-score-hides-from-you/

Aymen Loukil

April 20, 2023
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Transcript

  1. @LoukilAymen #BrightonSEO And this was my #webperf workflow Audit in

    Lab Write user stories Implement Test in Lab
  2. @LoukilAymen #BrightonSEO We need to wait for the next CrUX

    dataset (in 28 days) [Every second Tuesday]
  3. @LoukilAymen #BrightonSEO Where does it fall in our users? We

    have 100 users LCP 4s to 2.5s on mobile
  4. @LoukilAymen #BrightonSEO With a score of 50/100, many pages passes

    the Web Vitals Brendan Kenny @brendankenny
  5. @LoukilAymen #BrightonSEO If the page is loaded with Lighthouse, Gtmetrix,

    or other tool => Only load HTML, no styles, no JavaScript, no images
  6. @LoukilAymen #BrightonSEO CPUs are getting faster every year… 4G and

    5G are common… Our audience top device is iPhone.. But..we often assume
  7. @LoukilAymen #BrightonSEO A user does not care about your website

    Lighthouse score, your technical stack, or even if it is AI-powered..
  8. @LoukilAymen #BrightonSEO Remember my failed #webperf workflow? Audit in Lab

    Write user stories Implement Test in Lab https://www.vectorstock.com/ https://knowyourmeme.com/
  9. @LoukilAymen #BrightonSEO I transformed it into this: Audit in field

    Prioritize Implement Test in Lab Fast validate on users Iterate
  10. @LoukilAymen #BrightonSEO Audit in field Prioritize Implement Test in Lab

    Fast validate on users Hear your users experience, validate your effort with them Iterate Now you can use Lighthouse..
  11. @LoukilAymen #BrightonSEO Audit in field Prioritize optimizations Implement Test in

    Lab Fast validate on users Iterate Now you can use Google Lighthouse!