How to make all the "photos" the same background size?


I've stack loaded them into Photoshop.
So I'm trying to make all these logos have the same exact background size so I can use the same size for a Repeater on Editor X. The problem is when they are different sizes, some are cropped off at the top, or the sides.
How do I make it where I can quickly and easily export all to be the same size without loss of image quality as resizing some of them could result in image quality being lost? (vector, Adobe Illustrator?)
I can put everything in "manually" as there isn't that many there but I want to know if a solution for what I'm asking is possible just incase I have a lot to do in the future I can use it.

