Google has recently come out in support of using structured data markup for your organizations logo. This isn’t earth shattering stuff, but it will be nice to let big G know that if they show an image during search results to show your image. I like Google’s emphasis on structure markup as it allows web designers to be specific with Google’s spiders instead of leaving results up to interpretation.
By using the following markup on your site’s home page:
<div itemscope itemtype="http://schema.org/Organization"> <a itemprop="url" href="http://www.example.com/">Home</a> <img itemprop="logo" src="http://www.example.com/logo.png" /> </div>
you are indicating that the company’s logo is located at logo.png which gives Google the option to show this as an image in either the Knowledge Graph or the Search results. Please note that this is not a guarantee that this image will show up in the results, but over time this will continue to be a strong signal to Google’s search algorithm that you would prefer that this image is used.