These images can be used in your Authorize.Net Merchant Seal. You could use this code below for your "Merchant Seal HTML":
<div class="text-center"> <br /><img class="img-responsive" src="https://www.studioware2.com/content/portal/images/authorize.net/seal1.png" alt=""><br /></div>
You would replace the value "pp11.png" with your image preference below:
https://www.studioware2.com/content/portal/images/authorize.net/seal1.png
https://www.studioware2.com/content/portal/images/authorize.net/seal1.gif
https://www.studioware2.com/content/portal/images/authorize.net/seal1.jpg
https://www.studioware2.com/content/portal/images/authorize.net/seal2.jpg
https://www.studioware2.com/content/portal/images/authorize.net/seal2.png
https://www.studioware2.com/content/portal/images/authorize.net/seal3.jpg
https://www.studioware2.com/content/portal/images/authorize.net/seal3.png
https://www.studioware2.com/content/portal/images/authorize.net/seal4.png
https://www.studioware2.com/content/portal/images/authorize.net/seal5.png
https://www.studioware2.com/content/portal/images/authorize.net/seal6.png
https://www.studioware2.com/content/portal/images/authorize.net/seal7.png
https://www.studioware2.com/content/portal/images/authorize.net/seal8.png
https://www.studioware2.com/content/portal/images/authorize.net/seal9.png
https://www.studioware2.com/content/portal/images/authorize.net/sealA.png
https://www.studioware2.com/content/portal/images/authorize.net/sealB.png
https://www.studioware2.com/content/portal/images/authorize.net/sealC.png
https://www.studioware2.com/content/portal/images/authorize.net/sealD.png