At Friday 17th of October, the 4th edition of SyliusCon took place. I travelled to Lyon to give a talk on Core Web Vitals debugging via DevTools.
I was invited to talk at SyliusCon 2025 many months ago. A nice opportunity to get to learn the Sylius community!
It was fun to meet up with Sylius, Symfony and PHP devs and speaking about sitespeed and Core Web Vitals debugging.
Survey
If you attended my talk at SyliusCon 2025, I’d love your feedback! Please take 2 minutes to fill in this survey:
Optional: If you’d like an in-house workshop on Core Web Vitals & SEO performance, you can either let me know via the above survey or via my personal contact form.
Presentation
My talk covered Core Web Vitals, CrUX, Lighthouse, PageSpeed Insights, and real-user monitoring — all with a few memes sprinkled in.
The slides
You can download my slides here.
Note: These slides are excluding the quiz questions and answers from the audience. If you were in the room and want to see the results too, make sure to fill in the survey — you’ll then receive a version that includes them.
