The Slotted Counter Pattern
Powerful Image Optimization Tools — Smashing Magazine
Image Optimization guide for SEO experts and webmasters
WebPageTest - Website Performance and Optimization Test
Mirage JS • An API mocking library for frontend developers
The Humble Element And Core Web Vitals — Smashing Magazine
katiefenn/parker
CSS Analytics - Project Wallace
Yellow Lab Tools - Page Speed audit
Cssstats
htaccess tester ♥ madewithlove
GitLive | Real-time code collaboration inside any IDE
WSTG - Stable | OWASP
Pest - An elegant PHP Testing Framework
Code Quality and Security | SonarQube
PageSpeed Insights
GTmetrix | Website Speed and Performance Optimization
Analyse de site Web, Test de Performance et Audit qualité | Dareboost
Kite - AI Coding Assistant for Python and JavaScript
ngrok - secure introspectable tunnels to localhost
Valentin says…
Front-End-Performance-Checklist