Setting SharePoint SEO (Search Engine Optimization) settings using CSOM

I wanted to add viewport meta to my SharePoint page to make it responsive. The best way to do that I found and agreed with was to add it to Search Engine Optimization settings. Stefan Bauer has an excellent blog on it: http://www.n8d.at/blog/how-to-add-viewport-meta-without-editing-the-master-page/

So, next step was to be able to provision this via CSOM. So I wrote the following code does that:

public void SetSearchEngineOptimizationSettings(ClientContext ctx)

{

  var web = ctx.Web;

  web.AllProperties["seoincludecustommetatagpropertyname"] = "true";

  web.AllProperties["seocustommetatagpropertyname"] = "<meta name=\"viewport\" content=\"width=device-width,initial-scale=1,maximum-scale=1\" />";

  web.Update();

  ctx.ExecuteQuery();

}

Ref: https://lixuan0125.wordpress.com/2013/10/18/add-and-retrieve-property-bag-by-csom/

Ref: https://code.msdn.microsoft.com/office/Updating-Search-Engine-848b7c0d