Board Thread:Support Requests - Designing Your Wiki/@comment-4060385-20131123220816/@comment-1330470-20131123225338

Check out my badges I have on Wolfenstein Wiki. Customized to the very end!

The way you do this is by creating finished badges, with the border you want, in an image program like Photoshop or GIMP. Upload the badges to your wiki via Special:AchievementsCustomize, at which point Wikia will add the default border that you don't want.

Now just go to the File: pages for each uploaded badge (check Special:Log/upload to find them) and upload over them like you would any other file - the default border will not be added!