What a good website does.

A platform-agnostic specification of the technical features every decent website should have — from <title> to /.well-known/security.txt , from WCAG contrast to llms.txt . Written for humans and agents.

Categories

Ten areas, mapped to widely-accepted standards.

All topics →

The HTML, head, and document basics every page needs.

Search visibility — robots.txt, sitemaps, canonicals, structured data.

WCAG-aligned rules so people of all abilities can use the site.

Headers, transport, and policies that keep visitors safe.

Standard, agreed-upon paths under /.well-known/.

Things that make a site legible to AI agents and crawlers.

Core Web Vitals, caching, images, fonts, network behaviour.

Consent, signals, and respecting visitor choice.

Graceful failure — error pages, offline, redirects.

Language, locale, direction, and translated content.

Standards, not opinions

Each topic links back to the source standard — WHATWG, W3C, IETF RFCs, WCAG, MDN, and the organisations defining…