Facebook don't get correct description an image on share for URLS that are DNS web-alias?

Question

Facebook doesn't get correct description for an image on share for URLs that are DNS web-alias.

See http://anon-chat.thibaultjanbeyer.com/

• Inferred Property The 'og:url' property should be explicitly provided, even if a value can be inferred from other tags.
• Inferred Property The 'og:title' property should be explicitly provided, even if a value can be inferred from other tags.
• Inferred Property The 'og:description' property should be explicitly provided, even if a value can be inferred from other tags.

The Facebook object debugger gives:

Based on the raw tags, we constructed the following Open Graph properties

• og:url http://anon-chat.thibaultjanbeyer.com/
• og:type website
• og:title anon-chat.thibaultjanbeyer.com
• og:description Your user agent does not support frames or is currently configured not to display frames. However you may visit the page that was supposed to be here
• og:updated_time 1435088030

Is there a workaround for this?

Answer 1

Your URL does not have any Open Graph tags that are visible to our crawler (see here).

Add the tags and you should be fine. If you have no control over the HTML at http://anon-chat.thibaultjanbeyer.com/, you're out of luck.