What it is
TDMRep is a W3C Community Group specification that enables publishers to declare their text and data mining (TDM) policies through a machine-readable file at /.well-known/tdmrep.json. Designed specifically to support the EU DSM Directive’s opt-out mechanism for commercial TDM.
Evidence trail
- Oct 01, 2025 Community group notes outline 2025 alignment work with AI-Pref
- Apr 22, 2025 Community group notes discuss standardization path and vocabulary work
- Aug 09, 2024 Version 3 final report listed
Examples
/.well-known/tdmrep.json Source
The W3C report shows a minimal root-level reservation file for a whole site.
[
{
"location": "/",
"tdm-reservation": 1
}
] HTML meta tags Source
The same report also defines page-level HTML metadata for reservation and policy links.
<meta name="tdm-reservation" content="1">
<meta name="tdm-policy" content="/policies/policy.json">