Official DLang logo re: Google?

[Ola Fosheim Grøstad]

On Thursday, 16 May 2019 at 13:24:53 UTC, Ola Fosheim Grøstad 
wrote:
> There is no point in trying more extensive SEO before you have 
> tried 2.) and resubmitted the site to Google for processing.

Ok, so having looked a bit more on this. The Swift icon is most 
likely picked up from one of two meta-tags, my guess is Open 
Graph.

<meta property="og:image" 
content="https://developer.apple.com/swift/images/swift-og.png" />
<meta name="twitter:image" 
content="https://developer.apple.com/swift/images/swift-og.png" />

C# is a nonlogo taken from code.visualstudio.com
Crystal is a nonlogo taken from medium.com
matlab is a nonlogo taken from mathworks.com
R is a nonlogo taken from revolution-computing.typepad.com

Rust is a logo taken from wikipedia.
Java is a logo taken from wikipedia.
C++ is a logo taken from wikipedia

Python is a logo taken from python.rs
Kotlin is a logo taken from pbs.twimg.com

So no clear pattern, site ranking seems to be dominating, perhaps 
except for the python.rs case.

Anyway, it is not completely unlikely that they use machine 
learning to find correlation between imagery and mentions of the 
programming language (by weighting and ranking) to determine the 
icon. Then select the most typical image.

But still, your best bet is to start by providing high resolution 
square icon perhaps as an open graph meta data link in addition 
to an icon link. You have to start with what you have some hope 
of influencing with little effort. Your best bet is to provide 
structured data in the formats that Google has stated public 
support for, as a start.

Anyway, if they use weighted algorithms then there is no clear 
answer to what you have to do to get over the threshold.