Open graph can resolve relative url?

html facebook-opengraph meta-tags meta

ebattulga · Mar 25, 2012 · Viewed 33.1k times · Source

I'm adding Facebook Open Graph meta tag to my site. For example:

<meta property="og:image" content="../images/aa.jpg"/>

Does Open Graph take relative URLs?

Otherwise, how can I convert a relative url to an absolute url in asp.net mvc3 - Is there any available function to do so?

Answer

Documentation have nothing about it, but relative URLs will not work, only full URL including scheme works.

As long as only full URLs supported you may convert relative to absolute url using URL.Content method (as suggested in What is the equivalent to Page.ResolveUrl in ASP.NET MVC?)

NOTES:

In 2012 in old Facebook bug tracker this bug was closed stating this is "by design" http://developers.facebook.com/bugs/192471680829756
If you look into http://ogp.me/ns RDF schema (in Turtle) og:image specified as ogc:url which have next description:

A string of Unicode characters forming a valid URL having the http or https scheme.