Complying with Google Checkouts Button Placement Requirements

From Shopify Wiki

Google Checkout has very specific button placement requirements, which currently are not met by default in Shopify's themes. This will be updated in the future, but for now you will have to manually edit your Cart.liquid template and add a line of Liquid code in order to become compliant with Google Checkout's policies.

Editing your Cart.liquid template

In order to add the Google Checkout button you need to edit your Cart.liquid template. You can find this by logging into the Shopify admin interface and clicking on the Assets tab, and then clicking on the Theme Editor link. Now you need to click on the Cart.liquid file.

Next-to or below your current checkout button you need to add the following Liquid tag:

 {{ content_for_additional_checkout_buttons }}

There is additionally a Liquid filter called google_button_options that you can use to set the image to be transparent instead of white. The default logo is white, and looks best on white backgrounds. You should use the transparent logo if you have a colored backround. The filter is used as follows:

 {{ content_for_additional_checkout_buttons | google_button_options: 'transparent' }}

Be aware that the content_for_addtional_checkout_buttons Liquid tag will also display a PayPal Express logo if you have PayPal Express enabled.

Google Checkout as your only payment option

If Google Checkout is the only payment method that you accept then you will want to completely remove the button that takes the customer to the Shopify checkout.