⚡️ Web Performance Artisan at @perfreviews_ | @GoogleDevExpert in #WebTech | @cloudinary Ambassador

Joined August 2008
6,051 Photos and videos
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I have published a website with Web Performance Snippets to make it more user-friendly, more orderly, and with a search feature ⚡️💾 webperf-snippets.nucliweb.ne… #WebPerf #Performance #PerfTools
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Joan León 🏞️⚡️ retweeted
May brought big updates to the web platform: You can now use native lazy loading for video and audio elements to easily save bandwidth and boost performance. Plus, CSS name-only container queries are Baseline newly available, simplifying your code → goo.gle/4dWV8qn
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Joan León 🏞️⚡️ retweeted
Stop struggling with AI coding tools that don't know the modern web. Modern Web Guidance codifies decades of Chrome's web platform expertise into your coding agents. Get expert-vetted skills for high-level disciplines and low-level features, with fallback strategies informed by Baseline data for reliable cross-browser support → goo.gle/4on8BMS
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It seems that I get very intense when I talk about Web Performance 😂 Photo of last week’s talk in the @commitconf
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Joan León 🏞️⚡️ retweeted
49 snippets de Web Performance que se pegan en la consola de DevTools y te dicen por qué tu web va lenta. Cero instalación, cero dashboards, cero esperar al reporte de Lighthouse. Lo mantiene @nucliweb (Joan León), GDE en Web Tech y Cloudinary Ambassador. 1.4k stars en GitHub. 🧵
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Joan León 🏞️⚡️ retweeted
The WebMCP origin trial is now available in Chrome 149 → goo.gle/4x97wMK Sign up to integrate experimental features for live testing and help shape future iterations of the API. Build structured tools so agents can complete tasks accurately without guessing your UI.
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Joan León 🏞️⚡️ retweeted
Apuntado a esta formación online que da @nucliweb para aprender a tratar con multiagentes y a construir MCPs orientados a web performance.
Llevo tiempo viendo demos de multiagentes y casi todas sufren de lo mismo: un agente escribe y otro revisa... para acabar haciendo una todo-app No son malas demos, pero no hay un motivo técnico real para dividirlas en agentes. Así no aprendemos cuándo sí tiene sentido Abro hilo con una alternativa 👇
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Joan León 🏞️⚡️ retweeted
Chrome 149 DevTools is out → goo.gle/4v55cVT Here's what's new: 💡 Agent walkthrough & Copy to coding agent in AI assistance 🎨 CSS Code Completion from Gemini in the Styles tab 🤖 WebMCP debugging tools in Application panel 🚀 DevTools for agents 1.0 with custom tools
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Friend: Hey, Joan, can you give us a hand? Me: Sure, send me the URL DevTools: It takes nearly 3 seconds to load the WordPress plugins Me: 🫠
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Joan León 🏞️⚡️ retweeted
The new @GoogleColab bridges the gap between local environments and the cloud, providing a zero-friction execution platform for developers and AI agents alike. The CLI Supports: ⚡️ Agent-driven Colab workflows ⚡️ Instant GPU/TPU provisioning ⚡️ Remote script execution ⚡️ Interactive runtime access (console/REPL) Learn more in the blog: goo.gle/4dNPhF6
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Este fin de semana he podido conocer a Edu, ver su Keynote en @commitconf, y conversar con él, y tengo muy claro que quiero leer ese libro 📖
Hoy publico mi primer libro: «Menos software, más impacto». Da un poco de vértigo. La tesis: tu equipo no va lento por escribir mal código. Va lento porque escribe código de más. 🧵
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Gracias @commitconf por darme la oportunidad de compartir con la comunidad Estas son las slides de la charla slides.com/joanleon/patrones… #CommitConf #WebPerf
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Joan León 🏞️⚡️ retweeted
I've recorded a walkthrough of our website scan feature. Scan your website for issues with page speed, accessibility, SEO, and AI optimizations. youtube.com/watch?v=Hy23ITTh…
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Joan León 🏞️⚡️ retweeted
🚀 GA4 Overview Report is now live. WebPerformance Report now supports analytics reporting. Connect Google Analytics 4 @googleanalytics and receive periodic insights directly in your inbox. Want to try it too? Send us a DM. #WebPerf #GoogleAnalytics #Analytics
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Joan León 🏞️⚡️ retweeted
Cutting Docker build size by ~99.8% (1.87 GB → 2.5 MB) Just using github.com/Kikobeats/untrack… 😌
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Joan León 🏞️⚡️ retweeted
Long-running AI agents can run tasks over hours, days or weeks. Here's a few of my thoughts on them from @googlecloud's Agent Factory.
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Joan León 🏞️⚡️ retweeted
The State of CSS survey is out! It's shorter this year! Please go take it! survey.devographics.com/en-U…

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Joan León 🏞️⚡️ retweeted
🎉 WebPerformance Report Week #22 is out! ✅ Join our growing community and subscribe today: ⚡ Web Performance Report:webperformancereport.com/ 🛡️ HTTP Security Report:webperformancereport.com/htt… ♿ A11y Report:webperformancereport.com/wav… #webperf #websecurity #accessibility #a11y #ai
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“Most teams fall into a reactive performance decay cycle: ship, wait for complaints, panic, patch, repeat. The Fast by Default model provides a repeatable alternative that keeps systems healthy.” Performance Engineering in Practice, by @denodell #WebPerf #Performance
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