I love Nokogiri for everything XML, HTML and Ruby. I think the library has been in each project of mine for three or four years. Today’s example I read an HTML file from a service and add nodes the tag. This is a basic extension of the Nokogiri documentation, but should help a basic case not illustrated well in the docs. # Fetch a remote asset and translate it to Nokogiri @page = Nokogiri::HTML::Document.parse(remote_asset) @link = @page.css("body") @meta = @page.css("head").css("meta")   # Create a new node and add the attributes @thumb = Nokogiri::XML::Node.new "link", @page @thumb["href"] = "http://application-bucket.s3.amazonaws.com/fancy/css/jquery.thumbs.css" @thumb["type"] = "text/css" @thumb["rel"] = "stylesheet"   # Attach the new node to the page @meta.after(@thumb)   # Assign a new instance[…]