I’ve been implementing the opengraph protocol for my blog post pages. I wanted to be sure I implemented it right and searched for tools that could help me with this task. I came up with the folowing two:

• Opengraph Linter
• Google Rich snippet tool

When running a post through the Opengraph linter it came up that og:image must have a absolute url. Relative urls are not supported.

Some other links on the opengraph protocol:

• https://developers.facebook.com/docs/opengraphprotocol/
• https://developers.facebook.com/docs/technical-guides/opengraph/
• http://ogp.me/