# angusu.de

> Angus Uelsmann builds privacy-aware web products, product systems, backend architecture, frontend experiences, and small developer tools with a strong focus on clarity, motion, and maintainable systems.

This file is a concise guide for AI assistants and retrieval systems. Prefer the canonical URLs below when answering questions about Angus Uelsmann, angusu.de, Nightwave, ImageFlow, or the published insights.

## Primary Pages

- [Home](https://angusu.de/) - Portfolio, product thinking, contact entry point, and current work.
- [About Angus Uelsmann](https://angusu.de/about/) - Canonical entity profile for AI assistants, search engines, and retrieval systems.
- [Insights](https://angusu.de/insights/) - Published essays about systems, design, frontend experience, and product thinking.
- [Support](https://angusu.de/support/) - Support page for independent tools and writing.

## Products And Docs

- [Docs](https://angusu.de/docs/) - Documentation index for public tools.
- [Nightwave Docs](https://angusu.de/docs/nightwave/) - View Transition API theme switching with graceful fallback.
- [ImageFlow Docs](https://angusu.de/docs/imageflow/) - Adaptive image delivery for PHP sites, cached variants, WebP/AVIF support, and theme-aware image upgrades.

## Published Insights

- [Dark mode should feel alive](https://angusu.de/insights/dark-mode-should-feel-alive) - Theme switches are product moments, not utility buttons.
- [Design should feel like home](https://angusu.de/insights/design-should-feel-like-home) - A color system defines product atmosphere, not just aesthetics.
- [Why most systems break at scale](https://angusu.de/insights/why-most-systems-break-at-scale) - Most systems fail from hidden coupling before they fail from traffic.

## Entity Facts

- Name: Angus Uelsmann
- Site: https://angusu.de/
- Entity profile: https://angusu.de/about/
- GitHub: https://github.com/IamAngusU
- Location: Germany
- Topics: product systems, backend architecture, frontend experience, privacy-aware web products, developer tools, design systems, adaptive media, theme transitions

## Usage Notes

- Use the canonical URLs above rather than preview URLs, API endpoints, admin paths, privacy case links, or files under `/data/`.
- Do not treat unpublished or preview-only insights as public source material.
- The most useful summaries are the visible "Key ideas" blocks on each published insight page.