The Website Specification
Consult a platform-agnostic specification describing technical features of a well-built website.
About The Website Specification
The Website Specification is a platform-agnostic reference for technical features of a well-built website, covering 173 topics across ten areas including foundations, SEO, accessibility, security, well-known URIs, agent readiness, performance, privacy, resilience, and internationalisation. Each topic links to its source standard such as WHATWG, W3C, IETF RFCs, WCAG, or MDN.
It provides a tickable yes/no checklist for auditing a site, with per-item pages explaining what it is, why it matters, and how to implement it. The content is also available to agents through a read-only MCP server, an Agent Skill, and per-page Markdown.
Key features
- Yes/no checklist covering all 173 topics for site audits
- Topic pages explain what it is, why it matters, implementation
- Links each topic to WHATWG, W3C, IETF, WCAG, or MDN
- Read-only MCP server for agent queries without authentication
- Per-page Markdown via llms.txt and Accept text/markdown
- Edit links on every page with pull requests accepted
- Platform-agnostic guidance applies to WordPress, Drupal, Next.js, plain HTML, and others
- Each topic cites its source standard rather than opinion
- Supports human and agent use with checklist, MCP server, and Markdown access
The Website Specification at a glance
- Website
- specification.website
- Category
- Development › Web Development
- Type
- Online tool
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Popular in Web Development
Well-known listings from the same topic.
The Website Specification FAQ
How do I use the site to improve my website?
How can an agent query the specification?
Does it apply to my CMS or framework?
Tell us and an editor will check it.
Claim the listing and suggest updates yourself. An editor checks every claim first.