I have some images with a transparent background like this:
So, when applying it somewhere it looks like that:
And all i want to is add a frame around it to looks like that :
So, how can i do that ?
1- Create a rounded-edges square on Photoshop, put it above the image you desire.
2- Reduce its "Fill" to 0% (not the opacity)
3- Open the Layer Style window for this shape, add a 2px white stroke for example and click Ok
Hope this helps