How can I insert payments logos in the footer for opencart 3.X?
you can Edit Footer Template file : catalog\view\theme\default\template\common\footer.twig
Replace
<p>{{ powered }}</p>
to
<p>{{ powered }}<img src="/image/yourimage path/yourimagename.png"
width="500" height="50" class="img-responsive" alt="Payment"
style="float:right"></p>
I think it will be working fine.