Twitter Cards WARN: Not whitelisted


INFO: Page fetched successfully
INFO: 9 metatags were found
WARN: Not whitelisted


Here’s our domain,
Thanks for debugging.

Jean Marc


Looks like this is working now? (although the value of your twitter:domain tag is not valid)


Hi I have the same problem,

our website is

the validator says

Unable to render card preview

INFO: Page fetched succesfully
INFO: 8 metatags were found
WARN: Not Whitelisted



There is no twitter:card markup visible in your page’s source.


Hi @andypiper,

I have the same problem. My website address is and when I try to validate I get the message that my website isn’t whitelisted. Can you please help me on this issue.
Thanks for the help in advance.


I see this in your site’s source code:

<meta name="twitter:card" content="Lighting Solutions">

“Lighting Solutions” is not a valid type of Card.


@andypiper I have updated twitter:card type.

Thanks. Now card working sucessfully.