
Posts tagged "Tech"
Tutorials, guides, and technical articles.
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PreTeXt: The Library That Makes Text Programmable
I didn't get the hype around a text measurement library. So I built dozens of demos — from masonry grids to a sphere that reflows text at 60fps.

The Agent Economy: When AI Gets Its Own Money
AI agents now have payment cards, wallets, email, and social networks. A new economy is forming — and it's not what I predicted in 2018.




Migrating to Astro 6: Was It Worth the Wait?
How I migrated XergioAleX.com to Astro 6 in minutes, what broke, and why the experimental Rust compiler turned perception into measurable speed.

The Scorecard: How to Measure What AI Can't Tell You
AEO measurement is years behind AEO optimization. Here's what the industry has, what's still missing, and one audit framework that gives you something concrete to work with.

Markdown for Agents: Making Your Content Speak AI's Language
Markdown for Agents: content negotiation meets AI—what the pattern means and a working Astro plus Cloudflare Pages implementation.

The Shift: Why Rankings No Longer Mean Visibility
The search landscape changed — and most sites aren't ready. Here's what the shift looks like, why AI answer engines work differently, and the two foundations every site should have in place.

AEO: What Changes When AI Starts Answering Instead of Linking
AI agents are now some of the most important visitors to your site — and they don't click links. A practical guide to Answer Engine Optimization: what it is, how it differs from SEO, and why the first-mover window is still open.

Why I Ditched ESLint + Prettier for Biome
After years of chasing ESLint upgrades and managing the Prettier conflict dance, I switched to Biome. One config file, one binary, and I haven't looked back.

GoCarga: My First Startup Adventure and the Art of the Pitch
How building a cargo transport platform with university friends taught me the most valuable entrepreneurial skill: telling a story that makes people believe.
Tracking the Invisible: How I Built AI Bot Analytics with Zero Client-Side JavaScript
One Cloudflare Pages middleware file reveals AI crawler visits that client-side JavaScript analytics completely miss—no extra scripts required.

The Best Way to Deploy Your Astro Site for Free
After years deploying static sites on GitHub Pages, I evaluated the free options and landed on Cloudflare Pages. Here's what I learned and what surprised me.

How I Built a Multilingual Website with Astro
Designing multilingual Astro from scratch: typed translations, the Page Wrapper pattern, and scaling to more languages without rewiring components.

Astro and Svelte: Why I Believe They're the Future of Web Development
Why Astro and Svelte simplify modern web development—State of JS 2025 data, benchmarks, and practical lessons from building this website.

Architecture of a Scalable Blog Without a Backend
How this blog scales without a backend: Content Collections, tag taxonomy, client search, series navigation, and bilingual builds.

Measuring What Matters: How I Set Up Free Analytics Without Sacrificing Performance
Chapter four while building XergioAleX.com: free analytics with privacy-first tools that keep Lighthouse at 100—no cookie banners.

The Road to 100: How I Achieved Perfect Lighthouse Scores on Every Category
The story of reaching 100/100/100/100 on Lighthouse PageSpeed for Performance, Accessibility, Best Practices, and SEO on mobile and desktop.

Building XergioAleX.com: How I Built My Personal Website with Astro, Svelte, and AI
From one-page landing to bilingual, AI-ready XergioAleX.com: architecture, stack choices, and why Astro + Svelte fits static sites.



Building sebastianmartinezvanegas.com: The Website I Built for a Talented Colombian Poet
Astro and Svelte portfolio site for Sebastián Martínez Vanegas, Colombian poet and winner of the Emilio Prados International Poetry Prize.

Building sergioykathe.com: The Wedding Website I Built for Our Special Day
A fully static wedding invitation site built with Astro, Svelte, and GitHub Pages — unique codes, RSVP via Google Forms, zero backend.


Migrating Pereira Tech Talks: From Ghost to Astro
Migrating pereiratechtalks.org from Dockerized Ghost to static Astro on GitHub Pages — ten years of lessons packed into two weeks of code.

Astro in Action
Why Astro won me over — Microsoft and Firebase cases, measurable gains, and a live Pereira Tech Talks migration to prove it is not hype.