Joan León - English

joanleon.dev

50 posts4 readers

Blog de desarrollo web: Web Performance, CSS, JavaScript, React, Web Animation, Media Optimization y Creative Coding.

* Latest posts *

[OCT.05.2026]
Dynamic import(): the browser already caches our modules
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[SEP.16.2026]
WebMCP on a static site: the GeeksCAT Conf 2026 website, ready for agents
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[AUG.25.2026]
HTTP cache partitioning: the same image, downloaded twice
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[AUG.13.2026]
A skill that knows nothing: the architecture of Modern Web Guidance
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[AUG.11.2026]
The CrUX 28-day rolling window
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[JUL.19.2026]
A 301 on every click: the trailing slash that slowed down all internal navigation
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[JUL.02.2026]
Keep-Alive is not Cache-Control: anatomy of a network waterfall
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[JUN.21.2026]
The mystery of the self-repainting #document: Paint flashing and composited layers
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[JUN.13.2026]
Antigravity Skills: advanced YAML frontmatter configuration
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[APR.28.2026]
Video editing in the browser with WebGPU
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[APR.27.2026]
Forced Synchronous Layout: how to detect and analyze it with DevTools
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[APR.21.2026]
ML in the browser with WebGPU: real-time inference
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[APR.16.2026]
Automate the browser from the terminal with Chrome DevTools MCP CLI
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[APR.14.2026]
Image processing in the browser with WebGPU
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[APR.07.2026]
WebGPU: the browser's new performance engine
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[MAR.26.2026]
AI in Web Performance Audits: Deterministic Measurement and Actionable Reports
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[MAR.18.2026]
AI-Driven Performance Debugging: Gemini + Chrome DevTools MCP
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[MAR.13.2026]
Adding an AI summary to blog posts with the Chrome Summarizer API
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[MAR.10.2026]
WebPerf Snippets: progressive disclosure in Claude Skills
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[MAR.08.2026]
WebPerf Snippets agent-first: structured returns and minimal tokens
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