https:/
Testing performance on actual device should be mandatory for every project, as it makes so many issues obvious.
The best analouge you can buy for a representative P75 device today are ~$200 Androids from the last year or two, such as the Samsung Galaxy A50 and the Nokia G11.
The Decline of WebPageTest After the Catchpoint Era
The spirit of openness, clarity, and technical depth that defined it has been overshadowed by commercialisation and integration. I understand how…
Obs.js – context-aware web performance for everyone
Obs.js reads a handful of browser signals (Navigator and Battery APIs) to infer connection strength, battery status, and device capability. It exposes…
Low- and Mid-Tier Mobile for the Real World (2025)
It’s important to remember that ‘low-tier’ does not mean old. Likewise, ‘mid-tier’ does not mean ‘a flagship from 2018’. They are a device class in…
Shubham Bose
Good UX is highly desired and once you get it right, it feels almost natural, intuitive. The current state of news UI assumes that the reader is an…
Raphaël Dardeau
De SPA à MPA : reprendre en main la performance
Avec une SPA, la performance dépend d’un temps d’exécution global de l’application, alors qu’avec une MPA, elle découle directement du travail réellement…
Alex Russell 
Florian Thoma
Harry Roberts