W3C home > Mailing lists > Public > www-validator@w3.org > January 2011

Re: Can Open Graph Protocol be validated by W3C Markup Validation Service ?

From: Benjamin Hawkes-Lewis <bhawkeslewis@googlemail.com>
Date: Sun, 9 Jan 2011 09:19:35 +0000
Message-ID: <AANLkTi=JaZtzV=HrodkA744UR8At3hZY6HYV2UgbwCyF@mail.gmail.com>
To: Fred Marka <fredmarka@hotmail.com>
Cc: www-validator@w3.org
On Sun, Jan 9, 2011 at 2:12 AM, Fred Marka <fredmarka@hotmail.com> wrote:
> In order to add use Facebook features I put some meta tags relative to Facebook (property, og) but when I try to validate my webpage http://www.agencearagon.com I go the following error:
> Line 23, Column 16: there is no attribute "property"
> <meta property="fb:admins" content="727013482" />
> I've seen that these meta belong to the Open Grap Protocol (http://ogp.me/).
> Does it mean that every page that intend to use Facebook features could not be validated ?

The processing of RDFa metadata like this is not standardized in text/html.

The RDFa WG and HTML WG are drafting an extension to HTML 4.01 standard
and to the draft of HTML5, called HTML+RDFa, in which RDFa such as this
metadata would be conforming.


The W3C validator includes experimental HTML5 validation, but not experimental
HTML+RDFa validation.

Benjamin Hawkes-Lewis
Received on Sunday, 9 January 2011 09:20:20 UTC

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