Customize the kartik social extension buttons and share a view


I follow the user guide manual of kartik social widgets but found it is using these social network generated buttons(icons).

I would like to use my own icons how can I do that? I try to attach an image file to show how I want my icon to be but the system is failing to upload. It is rounded icons of those social network logo.

I would also like to share a view containing image but don’t know how to do it.

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Is this not possible?