In this sharing debugger result, I notice some strange properties:

  • ia:markup_url
  • ia:markup_url_dev
  • ia:rules_url
  • ia:rules_url_dev

There is no documentation in The Open Graph protocol. What are they for?

1 Answer 1


A quick Google search shows me that those are related to Facebook Instant Articles.

It looks like the functionality/service is no longer available as of April 2023. Maybe the debugger is still leveraging the meta tags for other services...

  • What's the keyword you use to Google? I can't figure out one
    – Ooker
    Commented Jan 29 at 10:18
  • I just searched for ia:markup_url and it came up with some documentation. Then I just quickly skimmed some of them to be sure. Commented Jan 29 at 13:42
  • Weird. I did the same but the result was just code from other projects. None of them referred to anything useful
    – Ooker
    Commented Jan 29 at 14:15

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.