Markdown twin
In short
A markdown copy of a page at a predictable URL, such as page.md or page.html.md. Example: GitBook returns markdown when .md is appended to any published page URL. Related terms: Accept header, Content negotiation, Markdown negotiation, Vary: Accept, OpenAPI. Accept header: The request header that lists media types a client will take, with optional q weights.
Source of the example
The example in the summary above is from gitbook.com, read 4 November 2026.
Where it shows up on this site
Neighbouring terms
- Accept header: The request header that lists media types a client will take, with optional q weights.
- Content negotiation: The HTTP mechanism where the client states preferred formats in the Accept header and the server picks a representation for the same URL.
- Markdown negotiation: Content negotiation where Accept: text/markdown returns the page as markdown with Content-Type text/markdown.
- Vary: Accept: A response header telling caches that the body depends on the Accept header, so HTML and markdown are stored separately.
- OpenAPI: A machine-readable description of an HTTP API, usually openapi.json or openapi.yaml.
Sources
- gitbook.com https://gitbook.com/docs/publishing-documentation/llm-ready-docs, read 4 November 2026
Last reviewed 4 November 2026