yws.lu: rebuilding a Luxembourg non-profit's site from Next.js to Astro in one day
Case study: migrating a Next.js site with 3D to static Astro in one day with Claude Code. Lab Lighthouse on phones: 23-28 to 99-100.
Blog
Notes from building web and mobile products: AI-assisted development with Claude Code, i18n with Lingui, performance and accessibility. With sources.
Trying to build an Awwwards-winning brutalist portfolio: the process, the mindset and the tools
Case study: why I swapped my 3D portfolio for a poster. The research, the sites I learned from, every version, and shaders that never get in the way.
Psychology in UX and on the frontend: persuasion you can defend
Scarcity, social proof, anchors, defaults and progress bars, built honestly in code, and where EU and Polish law draws the line on dark patterns.
A contact form on a static site: one function, server-side email and the bug that failed every message
One Vercel Function next to a static Astro build: a message-first form, three bot checks, EmailJS from the server, no-JS support and one ESM bug.
A multilingual Astro site with Lingui: routes, hreflang and a language switch that keeps your place
How this site serves English, Polish and Spanish from one static Astro build: locale routes, translated slugs, hreflang and a switch that keeps your page.
Hover effects on phones: every hover gets a tap, focus or scroll twin
Phones have no cursor. How this site gates hover with (hover: hover) and (pointer: fine) and gives every hover a tap, focus or scroll twin.
How do you keep a web CV and its PDF from drifting apart?
My CV page and its PDFs in English, Polish and Spanish come from one TypeScript file: Playwright prints a designed A4 sheet, and a test fails on drift.
Lighthouse scores of 16 developer portfolios: immersive vs minimal
Mobile Lighthouse, 3 runs each, on 16 well-known developer portfolios: 3D median 35.5, minimal 74.5. The method, the results and what the score misses.
Shipping a mobile app alone: Linkoglot, from one codebase to two app stores
How I built and shipped Linkoglot, an AI language app, alone: Expo, Supabase, RevenueCat, Lingui in 30 languages, and what both app stores ask for.
Why my three.js portfolio was slow on mobile, and what a 3D site needs
My old three.js portfolio scored 34 on mobile Lighthouse. What made it slow, and a checklist for a 3D site that stays fast on phones.
An LLM wiki: project memory for Claude Code that survives compaction
How I stop Claude Code from forgetting: a foldered markdown wiki, a routing table, a lessons file and three hooks that reload them after compaction.
Astro vs Next.js for a portfolio or a landing page
When Astro fits a portfolio or landing page and when Next.js is the right call, with HTTP Archive Core Web Vitals data and this site's measurements.
Claude Code skills, hooks, MCP servers and subagents: which one when
When to use CLAUDE.md, a skill, a hook, an MCP server or a subagent in Claude Code: the official docs, plus the real setup that built this site.
Cookieless analytics in the EU: Umami, GDPR and Poland's art. 399
Cookieless is not automatically consent-free. What GDPR and art. 399 of Poland's electronic communications law say, and three positions you can defend.
Fit text to its container at build time with a variable font
How my name runs edge to edge on this site with no JavaScript: font metrics measured at build time, the wdth axis, cqi units and font-stretch.
Lingui vs i18next in 2026: which i18n library for React and React Native
Lingui and i18next compared from their docs and npm data: message format, macros, compile step, bundle size, plurals, TypeScript and React Native.
Motion that respects people: prefers-reduced-motion and a pause button
How this site handles motion: a WCAG 2.2.2 pause control, prefers-reduced-motion, loops that stop offscreen and reveals that never hide content.
Translating Lingui catalogs with an LLM
How to machine-translate Lingui .po catalogs with an LLM, what breaks (placeholders, plurals, tone) and the checks to run before a catalog ships.
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