I am a habitual tab hoarder so I created a Firefox addon to help me manage every one of my very special browser tabs. Sort tabs by oldest, unload them, find duplicates, and consolidate tabs to a single window — buncha useful stuff in there! Download from Mozilla Addons Source…
Llamar a import() cada vez que se usa una funcionalidad no vuelve a descargar ni a evaluar el módulo: el navegador lo reutiliza desde su module map. Qué garantiza, cuándo deja de ser el mismo módulo y qué pasa cuando la primera carga falla.
Millions of Large-Language-Model-generated words have been spilled on craftsmanship in this gilded-age of software development. We now have agents to plan how code will be written, agents to write code, agents to review code, agents to orchestrate and dispatch tasks to other…
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La web de GeeksCAT Conf 2026 es un sitio estático con Astro y expone su agenda, sus ponentes y los datos del evento a agentes de IA con WebMCP. Tres capas: un manifiesto en /.well-known, endpoints JSON generados en build y registro de herramientas con document.modelContext.
I’ve been doing some spring/fall cleaning and found an unpublished follow-up component to <snow-fall> (a web component to “snow” on your website — which also happens to work with emoji too). Originally it was created as an easter egg for Blog Awesome (click on the Font Awesome…
…and another one. This little (zero CSS) web component has two modes: progressively enhance a hierarchy of server rendered <ol> or <ul> elements (or conveniently client render them for you if they don’t exist) to highlight which are currently visible in the viewport. I pulled…
In Trying out a Two-state Dark Mode Toggle I summarized the Two-state Dark and Light mode Toggle discussion as I experimented with a toggle in my personal website footer. After launch, Curtis Wilcox left some good feedback to improve the accessibility of the component. I decided…
What it takes to run agents in a codebase older than the team
Update I made some updates and released it as a web component: details in Solar Eclipse Toggle, a Dark/Light mode Toggle Web Component. Lea Verou sparked some lovely discussions about dark/light mode toggles by asking a simple question: do these form controls need three options…
Prior blog post (if you want the full context): If I work really hard on my Open Graph Images, People will share my Blog Posts (2021 Aug) Here’s the gist: Open Graph images are those little pictures that show up when your site is shared on social media. […] Each individual blog…
Agents can finish the task without teaching you anything. Building expertise now has to be deliberate.
speedlify.dev, now running Speedlify2. The year is 2020. Inspired by a lack of budget for a web performance monitoring tool, the original Speedlify project (Speedlify Classic) was shipped to continuously measure site performance. It ran Lighthouse against a predetermined list of…
Una página con un iframe cross-site pide la misma imagen desde el iframe y desde el padre. En Chrome se descarga dos veces; en Firefox y Safari, una. Por qué la cache key no es la misma en los tres motores, por qué compartir partición no garantiza el hit, y qué propone…
A field guide to building a software factory that still has an owner.
Goals, loops, and the discipline of not delegating your judgment
Modern Web Guidance no guarda el conocimiento en la skill, enseña al agente a recuperarlo. Búsqueda semántica local con MiniLM y TensorFlow.js, guías con grader propio y calibración empírica del contenido.
Cómo funciona de verdad la ventana móvil de 28 días de CrUX, qué publica cada fuente y por qué el p75 tarda tanto en moverse aunque los datos solo tengan dos días de retraso.
I have a lot of open source projects (of varying sizes and shapes). At time of writing, I’m currently maintaining ×78 npm packages. Of those, 22 are super lightweight zero-dependency custom elements a.k.a. 🚾 Web Components (love the future compatibility I get with very little…
The 48 desks behind these stories. Open one to read only their work.
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