lukasmu.com

Personal website of Lukas Müller, available at lukasmu.com.

Plain HTML, CSS, and a little JavaScript. No framework and no build step for the pages; Node is only used for linting and tests. The home page is one screen: a mountain photo and a working terminal (try help). Everything is available in English, German, and Dutch.

Structure

index.html             home page: photo, terminal, contact icons
imprint.html           imprint and accessibility statement (DE binding, EN/NL)
privacy.html           privacy policy (DE binding, EN/NL)
404.html               not-found page; also redirects old /de/, /nl/, /en/ URLs
lukasmu.pub            public SSH key
css/style.css          the only stylesheet; design tokens at the top
js/i18n.js             interface strings in EN/DE/NL
js/main.js             language switching, terminal, easter egg
assets/                fonts, images, favicon (assets/images/_originals is not deployed)
tests/                 Playwright tests, contrast test, link checker
tools/                 build, local server, image and icon helpers

Local preview

npm ci
npm run build
npm run serve

Then open http://127.0.0.1:4173. The local server behaves like GitHub Pages (/imprint finds imprint.html, unknown paths get 404.html).

Checks

The same commands run in GitHub Actions:

npx playwright install chromium
npm run check

npm run check runs lint (HTML, CSS, JS), the build, pa11y (WCAG 2 AA), the Playwright tests, the link checker, and Lighthouse. Locally, Lighthouse needs a Chrome binary. If none is installed, point it at Playwright's:

export CHROME_PATH=$(node -e "console.log(require('@playwright/test').chromium.executablePath())")

Assets

• Photo derivatives and the share image: bash tools/optimize-images.sh (needs ffmpeg with libwebp).
• iOS home-screen icon from the favicon: node tools/render-icons.mjs.

Deployment

GitHub Pages deploys the filtered _site/ folder that tools/build.sh creates. One workflow checks pull requests and deploys successful main builds. In the repository settings, set Pages → Source to GitHub Actions and add lukasmu.com as the custom domain. Point the domain's DNS directly at GitHub Pages; the privacy policy names GitHub as the only host.

See AGENTS.md for the conventions behind the design, the terminal, localization, and the legal pages.

Tips & tricks

• Very important tip: Add lots of easter eggs!
• There is one already, with a bonus challenge. help and the browser console give hints.

Security

If you discover a security vulnerability, please send an e-mail to [email protected].

License

Source code: MIT, see LICENSE.md. Texts, photographs, and the favicon: all rights reserved, see NOTICE.md.