A small but often overlooked aspect of most ecommerce sites designs are the flat and bland payment options icons (Visa, Mastercard, Paypal…). From a usability standpoint the icons do need to be instantly recognized by the user, and you can understand why designers opt to use standard icon designs rather than being a little bit more adventurous.

Part of the problem is finding a uniform collection of payment icons that are both the same size and style and that are equally suited to your sites design. You will tend to have a mixture of icons that grouped together look strangely out of place. This is what this post aims to address, by helping you find a uniform collection of icons.

via 15 Uniform Payment Options Icon Sets for Ecommerce Design – Speckyboy Design Magazine.