WebPerformance Report

100K reports delivered. 🚀💯🎉🎇👏 A big milestone for WebPerformance Report. We are building a new reporting layer for the web: performance, security, accessibility, and beyond. Reports. Decisions. Results. #webperf

#week-21" target="_blank" rel="nofollow noopener">github.com/WebPerformance…

⚡Featured posts this week: ✨ Forbes' A11y List 2026: @alanschwarz ✨ Modern Web Guidance: @paul_irish, @cjamcl, Rick Viscomi ✨ @vivaldibrowser: our biggest design overhaul: @jonsvt ✨ Unlock modern web capabilities: @philwalton 🙏 Special thanks to the authors! #webperf

🎉 WebPerformance Report Week #21 is out! ✅ Join our growing community and subscribe today: ⚡ Web Performance Report:webperformancereport.com 🛡️ HTTP Security Report:webperformancereport.com/httpo/ ♿ A11y Report:webperformancereport.com/wave/ #webperf #websecurity #accessibility #a11y #ai

Firefox 151 now support the Document Picture-in-Picture API that enables web apps to open an always on top window that can be populated with arbitrary HTML content. Details in the upcoming edition of Modern Web Weekly. Demo and subscribe link 👇 🧵1/3

This is why the @googlechrome DevTools MCP is a game-changer. The agent applies a fix, reloads ignoring cache, runs a Lighthouse audit, and checks the score to iterate on the next failure. Fully automated and deterministic. #AgenticDev #WebDev #AI

Do you remember when you joined X? I do! #MyXAnniversary

#week-20" target="_blank" rel="nofollow noopener">github.com/WebPerformance…

⚡Featured posts this week: ✨ FAQ schema died twice: @jdevalk ✨ How optimize your content for gen AI: @googlesearchc ✨ Install web apps with the new HTML element: @patrickbrosset ✨ Browsers Treat Big Sites Differently: @denodell 🙏 Special thanks to the authors! #webperf

🎉 WebPerformance Report Week #20 is out! ✅ Join our growing community and subscribe today: ⚡Web Performance Report: webperformancereport.com 🛡️HTTP Security Report: webperformancereport.com/httpo/ ♿A11y Report: webperformancereport.com/wave/ #webperf #websecurity #accessibility #a11y #ai

#week-19" target="_blank" rel="nofollow noopener">github.com/WebPerformance…

⚡Featured posts this week: ✨ Build agent-friendly websites: Kasper Kulikowski & Omkar More ✨ Hardening Firefox with Claude Mythos: @bgrins ✨ Google to no longer support FAQ: @rustybrick ✨ A11y Best Practices: @MariaLamardo 🙏 Special thanks to the authors! #webperf

🎉 WebPerformance Report Week #19 is out! ✅ Join our growing community and subscribe today: ⚡Web Performance Report: webperformancereport.com 🛡️HTTP Security Report: webperformancereport.com/httpo/ ♿A11y Report: webperformancereport.com/wave/ #webperf #websecurity #accessibility #a11y #ai

El agente de IA no sabe debuggear rendimiento si tú no le das el contexto para hacerlo. No es que sea malo. Por defecto trabaja a ciegas: sin acceso al navegador, sin trazas reales. #WebPerf #Performance #AIAgents #ChromeDevTools #Frontend

Our @googleanalytics GA4 Reports are now being tested in our staging environment. 👀 We are getting closer to launching our new Analytics Report. Performance, security, accessibility, and now analytics. Something new is coming to our reporting layer. #WebPerf #Analytics

We switched Speculation Rules on Shopify storefronts from conservative to moderate eagerness. Here's how that went: performance.shopify.com/blogs/blog/fas…

⚡Featured posts this week: ✨ Store Speed and Conversion: @krzksz ✨ Prepare your Single Page Apps: @tunetheweb & @mmocny ✨ SEO is sitting in the wrong room: @pedrodias ✨ Orchestration without hallucination: @nucliweb 🙏 Special thanks to the authors! #webperf

🎉WebPerformance Report Week #18 is out!✅ Join our growing community and subscribe today: ⚡ Web Performance Report: webperformancereport.com 🛡️ HTTP Security Report: webperformancereport.com/httpo/ ♿ A11ty Report: webperformancereport.com/wave/ #webperf #websecurity #accessibility #a11ty #ai

Jean-Jacques Dubray built a very nice PWA for his restaurant. I'm proud What PWA Can Do Today was helpful in building it! Great work Jean-Jacques! linkedin.com/posts/jdubray_…

I've finished the WebGPU in the browser series. 4 articles: fundamentals, image processing, real-time ML, and video editing. Never written a shader before starting. In the last article we process video at 2ms per frame with WebGPU + WebCodecs. joanleon.dev/en/webgpu-brow… #WebPerf #JavaScript #WebGPU