Simon Willison's Weblog: headhttp://simonwillison.net/2009-04-12T12:33:48+00:00Simon WillisonA rev="canonical" HTTP Header2009-04-12T12:33:48+00:002009-04-12T12:33:48+00:00https://simonwillison.net/2009/Apr/12/chris/#atom-tag
<p><strong><a href="http://shiflett.org/blog/2009/apr/a-rev-canonical-http-header">A rev="canonical" HTTP Header</a></strong></p>
Chris Shiflett proposes optionally exposing rev=canonical information in an HTTP header, thus allowing sites to discover shorter URLs using just a HEAD request and removing the need to parse HTML. The pingback specification also uses this shortcut.
<p>Tags: <a href="https://simonwillison.net/tags/chris-shiflett">chris-shiflett</a>, <a href="https://simonwillison.net/tags/head">head</a>, <a href="https://simonwillison.net/tags/headers">headers</a>, <a href="https://simonwillison.net/tags/http">http</a>, <a href="https://simonwillison.net/tags/pingback">pingback</a>, <a href="https://simonwillison.net/tags/revcanonical">revcanonical</a></p>