: Structured data for social media profile doesn't show up under "Rich Cards" I'm trying to use rich cards to get Google to show my social media profiles in its "knowledge panel". I've followed

@Ravi8258870

Two things here:

First, like Rich Snippets, Rich Cards aren't guaranteed even if your code is perfect. Moreover, Rich Cards were only launched globally in May 2016, and then only for recipe- and movie-related content returned in google.com.


We’re starting to show rich cards for two content categories: recipes
and movies. They will appear initially on mobile search results in
English for google.com. We’re actively experimenting with more
opportunities to provide more publishers with a rich preview of their
content.


Second, and more pertinent to what I think you're after, Knowledge Graph is something different from Rich Snippets and Rich Cards. It's the panel at the right of search results which displays entity information, usually (but not always) derived from Wikipedia and Wikidata information.

If you're not already getting a Knowledge Graph panel for your entity, you won't get the social profile links either. The latter is contingent on the former.

Getting a Knowledge Graph result isn't always easy without having a Wikipedia article, which can mean you're subject to Wikipedia's definition of notability and the whims of its editors, but there are various articles around the web on achieving a Knowledge Graph result without a Wikipedia article.

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@Bryan171

The source code for the main webpage has FATAL Error. Note that on this error the scanner stops and does not scan further. This markup should be closely tied to the content of the web page. Therefore, source code errors prevent scanners from correctly reading and understanding markup with structured data. Further, Google's answer about the errors of the source code:



This came up recently with the change of the guidelines, with regards to
change made in the webmaster guidelines. We mentioned use valid HTML. The
question here is Is the W3C Validation (Broken HTML) ranking factor or
should we care about it?


It is not directly a ranking factor. It is not the sense that if your
site is not using valid HTML we will remove it from he index. Because I
think we will have a pretty empty search results.

But there are a few aspects there that do come into play. On the one hand,
a site with really broken HTML, something that we see really rarely, then
it is really hard for us to crawl it and index the content because we can’t
pick it up.

The other two aspects which are kind more in regards to structured data.
Sometimes it is really hard to pick up the structured data when the HTML is
broken completely. So you can’t easily use a validator for the structured
data.

The other thing is in regards to mobile devices and cross browser support
is if you have broken HTML then that sometimes really hard to render on
newer devices.


Additionally, read Introduction to Structured Data + Build, Test, and Release Your Structured Data of Google. Check the source code of your web pages on the Nu Html Checker. Check the markup of the structured data of your web pages on the Structure Data Tester of Google.
An SEO asked Google's John Mueller why his rich cards (rich snippets) aren't showing up in search. John responded with three possible reasons over Twitter:


Technically incorrect (use SDTT)
Not compliant with policies (eg, wrong markup type)
Or general quality issue with site


Source

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